RG(1) | User Commands | RG(1) |
NAME¶
rg - recursively search the current directory for lines matching a pattern
SYNOPSIS¶
rg [OPTIONS] PATTERN [PATH...]
rg [OPTIONS] -e PATTERN... [PATH...]
rg [OPTIONS] -f PATTERNFILE... [PATH...]
rg [OPTIONS] --files [PATH...]
rg [OPTIONS] --type-list
command | rg [OPTIONS] PATTERN
rg [OPTIONS] --help
rg [OPTIONS] --version
DESCRIPTION¶
ripgrep (rg) recursively searches the current directory for a regex pattern. By default, ripgrep will respect your .gitignore and automatically skip hidden files/directories and binary files.
ripgrep's default regex engine uses finite automata and guarantees linear time searching. Because of this, features like backreferences and arbitrary look-around are not supported. However, if ripgrep is built with PCRE2, then the -P/--pcre2 flag can be used to enable backreferences and look-around.
ripgrep supports configuration files. Set RIPGREP_CONFIG_PATH to a configuration file. The file can specify one shell argument per line. Lines starting with # are ignored. For more details, see CONFIGURATION FILES below.
ripgrep will automatically detect if stdin exists and search stdin for a regex pattern, e.g. ls | rg foo. In some environments, stdin may exist when it shouldn't. To turn off stdin detection, one can explicitly specify the directory to search, e.g. rg foo ./.
Like other tools such as ls, ripgrep will alter its output depending on whether stdout is connected to a tty. By default, when printing a tty, ripgrep will enable colors, line numbers and a heading format that lists each matching file path once instead of once per matching line.
Tip: to disable all smart filtering and make ripgrep behave a bit more like classical grep, use rg -uuu.
REGEX SYNTAX¶
ripgrep uses Rust's regex engine by default, which documents its syntax: https://docs.rs/regex/1.*/regex/#syntax
ripgrep uses byte-oriented regexes, which has some additional documentation: https://docs.rs/regex/1.*/regex/bytes/index.html#syntax
To a first approximation, ripgrep uses Perl-like regexes without look-around or backreferences. This makes them very similar to the "extended" (ERE) regular expressions supported by *egrep*, but with a few additional features like Unicode character classes.
If you're using ripgrep with the -P/--pcre2 flag, then please consult https://www.pcre.org or the PCRE2 man pages for documentation on the supported syntax.
POSITIONAL ARGUMENTS¶
OPTIONS¶
This section documents all flags that ripgrep accepts. Flags are grouped into categories below according to their function.
Note that many options can be turned on and off. In some cases, those flags are not listed explicitly below. For example, the --column flag (listed below) enables column numbers in ripgrep's output, but the --no-column flag (not listed below) disables them. The reverse can also exist. For example, the --no-ignore flag (listed below) disables ripgrep's gitignore logic, but the --ignore flag (not listed below) enables it. These flags are useful for overriding a ripgrep configuration file (or alias) on the command line. Each flag's documentation notes whether an inverted flag exists. In all cases, the flag specified last takes precedence.
INPUT OPTIONS¶
-e PATTERN, --regexp=PATTERN
For example, to search for the literal -foo:
rg -e -foo
You can also use the special -- delimiter to indicate that no more flags will be provided. Namely, the following is equivalent to the above:
rg -- -foo
When -f/--file or -e/--regexp is used, then ripgrep treats all positional arguments as files or directories to search.
-f PATTERNFILE, --file=PATTERNFILE
A line is printed if and only if it matches at least one of the patterns.
When PATTERNFILE is -, then stdin will be read for the patterns.
When -f/--file or -e/--regexp is used, then ripgrep treats all positional arguments as files or directories to search.
--pre=COMMAND
- WARNING
- When this flag is set, ripgrep will unconditionally spawn a process for every file that is searched. Therefore, this can incur an unnecessarily large performance penalty if you don't otherwise need the flexibility offered by this flag. One possible mitigation to this is to use the --pre-glob flag to limit which files a preprocessor is run with.
A preprocessor is not run when ripgrep is searching stdin.
When searching over sets of files that may require one of several preprocessors, COMMAND should be a wrapper program which first classifies PATH based on magic numbers/content or based on the PATH name and then dispatches to an appropriate preprocessor. Each COMMAND also has its standard input connected to PATH for convenience.
For example, a shell script for COMMAND might look like:
case "$1" in
*.pdf)
exec pdftotext "$1" -
;;
*)
case $(file "$1") in
*Zstandard*)
exec pzstd -cdq
;;
*)
exec cat
;;
esac
;;
esac
The above script uses pdftotext to convert a PDF file to plain text. For all other files, the script uses the file utility to sniff the type of the file based on its contents. If it is a compressed file in the Zstandard format, then pzstd is used to decompress the contents to stdout.
This overrides the -z/--search-zip flag.
--pre-glob=GLOB
This flag is useful when searching many files with the --pre flag. Namely, it provides the ability to avoid process overhead for files that don't need preprocessing. For example, given the following shell script, pre-pdftotext:
#!/bin/sh
pdftotext "$1" -
then it is possible to use --pre pre-pdftotext --pre-glob pre-pdftotext command on files with a .pdf extension.
Multiple --pre-glob flags may be used. Globbing rules match gitignore globs. Precede a glob with a ! to exclude it.
This flag has no effect if the --pre flag is not used.
-z, --search-zip
Note that this flag does not make ripgrep search archive formats as directory trees. It only makes ripgrep detect compressed files and then decompress them before searching their contents as it would any other file.
This overrides the --pre flag.
This flag can be disabled with --no-search-zip.
SEARCH OPTIONS¶
-s, --case-sensitive
This is a global option that applies to all patterns given to ripgrep. Individual patterns can still be matched case insensitively by using inline regex flags. For example, (?i)abc will match abc case insensitively even when this flag is used.
This flag overrides the -i/--ignore-case and -S/--smart-case flags.
--crlf
Principally, this permits the line anchor assertions ^ and $ in regex patterns to treat CRLF, CR or LF as line terminators instead of just LF. Note that they will never match between a CR and a LF. CRLF is treated as one single line terminator.
When using the default regex engine, CRLF support can also be enabled inside the pattern with the R flag. For example, (?R:$) will match just before either CR or LF, but never between CR and LF.
This flag overrides --null-data.
This flag can be disabled with --no-crlf.
--dfa-size-limit=NUM+SUFFIX?
The input format accepts suffixes of K, M or G which correspond to kilobytes, megabytes and gigabytes, respectively. If no suffix is provided the input is treated as bytes.
-E ENCODING, --encoding=ENCODING
Other supported values can be found in the list of labels here: https://encoding.spec.whatwg.org/#concept-encoding-get.
For more details on encoding and how ripgrep deals with it, see GUIDE.md.
The encoding detection that ripgrep uses can be reverted to its automatic mode via the --no-encoding flag.
--engine=ENGINE
Accepted values are default, pcre2, or auto.
The default value is default, which is usually the fastest and should be good for most use cases. The pcre2 engine is generally useful when you want to use features such as look-around or backreferences. auto will dynamically choose between supported regex engines depending on the features used in a pattern on a best effort basis.
Note that the pcre2 engine is an optional ripgrep feature. If PCRE2 wasn't included in your build of ripgrep, then using this flag will result in ripgrep printing an error message and exiting.
This overrides previous uses of the -P/--pcre2 and --auto-hybrid-regex flags.
-F, --fixed-strings
This flag can be disabled with --no-fixed-strings.
-i, --ignore-case
This is a global option that applies to all patterns given to ripgrep. Individual patterns can still be matched case sensitively by using inline regex flags. For example, (?-i)abc will match abc case sensitively even when this flag is used.
This flag overrides -s/--case-sensitive and -S/--smart-case.
-v, --invert-match
Note that this only inverts line-by-line matching. For example, combining this flag with -l/--files-with-matches will emit files that contain any lines that do not match the patterns given. That's not the same as, for example, --files-without-match, which will emit files that do not contain any matching lines.
This flag can be disabled with --no-invert-match.
-x, --line-regexp
This overrides the -w/--word-regexp flag.
-m NUM, --max-count=NUM
Note that 0 is a legal value but not likely to be useful. When used, ripgrep won't search anything.
--mmap
Memory map searching cannot be used in all circumstances. For example, when searching virtual files or streams likes stdin. In such cases, memory maps will not be used even when this flag is enabled.
Note that ripgrep may abort unexpectedly when memory maps are used if it searches a file that is simultaneously truncated. Users can opt out of this possibility by disabling memory maps.
This flag can be disabled with --no-mmap.
-U, --multiline
When multiline mode is enabled, ripgrep will lift the restriction that a match cannot include a line terminator. For example, when multiline mode is not enabled (the default), then the regex \p{any} will match any Unicode codepoint other than \n. Similarly, the regex \n is explicitly forbidden, and if you try to use it, ripgrep will return an error. However, when multiline mode is enabled, \p{any} will match any Unicode codepoint, including \n, and regexes like \n are permitted.
An important caveat is that multiline mode does not change the match semantics of .. Namely, in most regex matchers, a . will by default match any character other than \n, and this is true in ripgrep as well. In order to make . match \n, you must enable the "dot all" flag inside the regex. For example, both (?s). and (?s:.) have the same semantics, where . will match any character, including \n. Alternatively, the --multiline-dotall flag may be passed to make the "dot all" behavior the default. This flag only applies when multiline search is enabled.
There is no limit on the number of the lines that a single match can span.
WARNING: Because of how the underlying regex engine works, multiline searches may be slower than normal line-oriented searches, and they may also use more memory. In particular, when multiline mode is enabled, ripgrep requires that each file it searches is laid out contiguously in memory (either by reading it onto the heap or by memory-mapping it). Things that cannot be memory-mapped (such as stdin) will be consumed until EOF before searching can begin. In general, ripgrep will only do these things when necessary. Specifically, if the -U/--multiline flag is provided but the regex does not contain patterns that would match \n characters, then ripgrep will automatically avoid reading each file into memory before searching it. Nevertheless, if you only care about matches spanning at most one line, then it is always better to disable multiline mode.
This overrides the --stop-on-nonmatch flag.
This flag can be disabled with --no-multiline.
--multiline-dotall
Normally, a . will match any character except line terminators. While this behavior typically isn't relevant for line-oriented matching (since matches can span at most one line), this can be useful when searching with the -U/--multiline flag. By default, multiline mode runs without "dot all" mode enabled.
This flag is generally intended to be used in an alias or your ripgrep config file if you prefer "dot all" semantics by default. Note that regardless of whether this flag is used, "dot all" semantics can still be controlled via inline flags in the regex pattern itself, e.g., (?s:.) always enables "dot all" whereas (?-s:.) always disables "dot all". Moreover, you can use character classes like \p{any} to match any Unicode codepoint regardless of whether "dot all" mode is enabled or not.
This flag can be disabled with --no-multiline-dotall.
--no-unicode
By default, ripgrep will enable "Unicode mode" in all of its regexes. This has a number of consequences:
- . will only match valid UTF-8 encoded Unicode scalar values.
- Classes like \w, \s, \d are all Unicode aware and much bigger than their ASCII only versions.
- Case insensitive matching will use Unicode case folding.
- A large array of classes like \p{Emoji} are available. (Although the specific set of classes available varies based on the regex engine. In general, the default regex engine has more classes available to it.)
- Word boundaries (\b and \B) use the Unicode definition of a word character.
In some cases it can be desirable to turn these things off. This flag will do exactly that. For example, Unicode mode can sometimes have a negative impact on performance, especially when things like \w are used frequently (including via bounded repetitions like \w{100}) when only their ASCII interpretation is needed.
This flag can be disabled with --unicode.
--null-data
This is useful when searching large binary files that would otherwise have very long lines if \n were used as the line terminator. In particular, ripgrep requires that, at a minimum, each line must fit into memory. Using NUL instead can be a useful stopgap to keep memory requirements low and avoid OOM (out of memory) conditions.
This is also useful for processing NUL delimited data, such as that emitted when using ripgrep's -0/--null flag or find's --print0 flag.
Using this flag implies -a/--text. It also overrides --crlf.
-P, --pcre2
This is generally useful when you want to use features such as look-around or backreferences.
Using this flag is the same as passing --engine=pcre2. Users may instead elect to use --engine=auto to ask ripgrep to automatically select the right regex engine based on the patterns given. This flag and the --engine flag override one another.
Note that PCRE2 is an optional ripgrep feature. If PCRE2 wasn't included in your build of ripgrep, then using this flag will result in ripgrep printing an error message and exiting. PCRE2 may also have worse user experience in some cases, since it has fewer introspection APIs than ripgrep's default regex engine. For example, if you use a \n in a PCRE2 regex without the -U/--multiline flag, then ripgrep will silently fail to match anything instead of reporting an error immediately (like it does with the default regex engine).
This flag can be disabled with --no-pcre2.
--regex-size-limit=NUM+SUFFIX?
This useful to change when you explicitly want to let ripgrep spend potentially much more time and/or memory building a regex matcher.
The input format accepts suffixes of K, M or G which correspond to kilobytes, megabytes and gigabytes, respectively. If no suffix is provided the input is treated as bytes.
-S, --smart-case
A pattern is considered all lowercase if both of the following rules hold:
- First, the pattern contains at least one literal character. For example, a\w contains a literal (a) but just \w does not.
- Second, of the literals in the pattern, none of them are considered to be uppercase according to Unicode. For example, foo\pL has no uppercase literals but Foo\pL does.
This overrides the -s/--case-sensitive and -i/--ignore-case flags.
--stop-on-nonmatch
This overrides the -U/--multiline flag.
-a, --text
When binary file detection is enabled, it is imperfect. In general, it uses a simple heuristic. If a NUL byte is seen during search, then the file is considered binary and searching stops (unless this flag is present). Alternatively, if the --binary flag is used, then ripgrep will only quit when it sees a NUL byte after it sees a match (or searches the entire file).
This flag overrides the --binary flag.
This flag can be disabled with --no-text.
-j NUM, --threads=NUM
-w, --word-regexp
This overrides the -x/--line-regexp flag.
--auto-hybrid-regex
When this flag is used, ripgrep will dynamically choose between supported regex engines depending on the features used in a pattern. When ripgrep chooses a regex engine, it applies that choice for every regex provided to ripgrep (e.g., via multiple -e/--regexp or -f/--file flags).
As an example of how this flag might behave, ripgrep will attempt to use its default finite automata based regex engine whenever the pattern can be successfully compiled with that regex engine. If PCRE2 is enabled and if the pattern given could not be compiled with the default regex engine, then PCRE2 will be automatically used for searching. If PCRE2 isn't available, then this flag has no effect because there is only one regex engine to choose from.
In the future, ripgrep may adjust its heuristics for how it decides which regex engine to use. In general, the heuristics will be limited to a static analysis of the patterns, and not to any specific runtime behavior observed while searching files.
The primary downside of using this flag is that it may not always be obvious which regex engine ripgrep uses, and thus, the match semantics or performance profile of ripgrep may subtly and unexpectedly change. However, in many cases, all regex engines will agree on what constitutes a match and it can be nice to transparently support more advanced regex features like look-around and backreferences without explicitly needing to enable them.
This flag can be disabled with --no-auto-hybrid-regex.
--no-pcre2-unicode
Note that Unicode mode is enabled by default.
This flag can be disabled with --pcre2-unicode.
FILTER OPTIONS¶
--binary
Binary files are heuristically detected based on whether they contain a NUL byte or not. By default (without this flag set), once a NUL byte is seen, ripgrep will stop searching the file. Usually, NUL bytes occur in the beginning of most binary files. If a NUL byte occurs after a match, then ripgrep will not print the match, stop searching that file, and emit a warning that some matches are being suppressed.
In contrast, when this flag is provided, ripgrep will continue searching a file even if a NUL byte is found. In particular, if a NUL byte is found then ripgrep will continue searching until either a match is found or the end of the file is reached, whichever comes sooner. If a match is found, then ripgrep will stop and print a warning saying that the search stopped prematurely.
If you want ripgrep to search a file without any special NUL byte handling at all (and potentially print binary data to stdout), then you should use the -a/--text flag.
The --binary flag is a flag for controlling ripgrep's automatic filtering mechanism. As such, it does not need to be used when searching a file explicitly or when searching stdin. That is, it is only applicable when recursively searching a directory.
When the -u/--unrestricted flag is provided for a third time, then this flag is automatically enabled.
This flag overrides the -a/--text flag.
This flag can be disabled with --no-binary.
-L, --follow
This flag can be disabled with --no-follow.
-g GLOB, --glob=GLOB
As an extension, globs support specifying alternatives: -g 'ab{c,d}*' is equivalent to -g abc -g abd. Empty alternatives like -g 'ab{,c}' are not currently supported. Note that this syntax extension is also currently enabled in gitignore files, even though this syntax isn't supported by git itself. ripgrep may disable this syntax extension in gitignore files, but it will always remain available via the -g/--glob flag.
When this flag is set, every file and directory is applied to it to test for a match. For example, if you only want to search in a particular directory foo, then -g foo is incorrect because foo/bar does not match the glob foo. Instead, you should use -g 'foo/**'.
--glob-case-insensitive
This flag can be disabled with --no-glob-case-insensitive.
-., --hidden
A file or directory is considered hidden if its base name starts with a dot character (.). On operating systems which support a "hidden" file attribute, like Windows, files with this attribute are also considered hidden.
This flag can be disabled with --no-hidden.
--iglob=GLOB
--ignore-file=PATH
If you are looking for a way to include or exclude files and directories directly on the command line, then use -g/--glob instead.
--ignore-file-case-insensitive
This flag can be disabled with --no-ignore-file-case-insensitive.
-d NUM, --max-depth=NUM
For example, rg --max-depth 0 dir/ is a no-op because dir/ will not be descended into. rg --max-depth 1 dir/ will search only the direct children of dir.
An alternative spelling for this flag is --maxdepth.
--max-filesize=NUM+SUFFIX?
The input format accepts suffixes of K, M or G which correspond to kilobytes, megabytes and gigabytes, respectively. If no suffix is provided the input is treated as bytes.
Examples: --max-filesize 50K or --max-filesize 80M.
--no-ignore
This does not imply --no-ignore-files, since --ignore-file is specified explicitly as a command line argument.
When given only once, the -u/--unrestricted flag is identical in behavior to this flag and can be considered an alias. However, subsequent -u/--unrestricted flags have additional effects.
This flag can be disabled with --ignore.
--no-ignore-dot
This does not impact whether ripgrep will ignore files and directories whose names begin with a dot. For that, see the -./--hidden flag. This flag also does not impact whether filter rules from .gitignore files are respected.
This flag can be disabled with --ignore-dot.
--no-ignore-exclude
This flag can be disabled with --ignore-exclude.
--no-ignore-files
This flag can be disabled with --ignore-files.
--no-ignore-global
This flag can be disabled with --ignore-global.
--no-ignore-parent
This flag can be disabled with --ignore-parent.
--no-ignore-vcs
This flag implies --no-ignore-parent for source control ignore files as well.
This flag can be disabled with --ignore-vcs.
--no-require-git
By default, ripgrep will only respect filter rules from source control ignore files when ripgrep detects that the search is executed inside a source control repository. For example, when a .git directory is observed.
This flag relaxes the default restriction. For example, it might be useful when the contents of a git repository are stored or copied somewhere, but where the repository state is absent.
This flag can be disabled with --require-git.
--one-file-system
Note that this applies to each path argument given to ripgrep. For example, in the command
rg --one-file-system /foo/bar /quux/baz
ripgrep will search both /foo/bar and /quux/baz even if they are on different file systems, but will not cross a file system boundary when traversing each path's directory tree.
This is similar to find's -xdev or -mount flag.
This flag can be disabled with --no-one-file-system.
-t TYPE, --type=TYPE
This flag supports the special value all, which will behave as if -t/--type was provided for every file type supported by ripgrep (including any custom file types). The end result is that --type=all causes ripgrep to search in "whitelist" mode, where it will only search files it recognizes via its type definitions.
Note that this flag has lower precedence than both the -g/--glob flag and any rules found in ignore files.
To see the list of available file types, use the --type-list flag.
-T TYPE, --type-not=TYPE
This flag supports the special value all, which will behave as if -T/--type-not was provided for every file type supported by ripgrep (including any custom file types). The end result is that --type-not=all causes ripgrep to search in "blacklist" mode, where it will only search files that are unrecognized by its type definitions.
To see the list of available file types, use the --type-list flag.
--type-add=TYPESPEC
Note that this must be passed to every invocation of ripgrep. Type settings are not persisted. See CONFIGURATION FILES for a workaround.
Example:
rg --type-add 'foo:*.foo' -tfoo PATTERN
This flag can also be used to include rules from other types with the special include directive. The include directive permits specifying one or more other type names (separated by a comma) that have been defined and its rules will automatically be imported into the type specified. For example, to create a type called src that matches C++, Python and Markdown files, one can use:
--type-add 'src:include:cpp,py,md'
Additional glob rules can still be added to the src type by using this flag again:
--type-add 'src:include:cpp,py,md' --type-add 'src:*.foo'
Note that type names must consist only of Unicode letters or numbers. Punctuation characters are not allowed.
--type-clear=TYPE
Note that this must be passed to every invocation of ripgrep. Type settings are not persisted. See CONFIGURATION FILES for a workaround.
-u, --unrestricted
A single -u/--unrestricted flag is equivalent to --no-ignore. Two -u/--unrestricted flags is equivalent to --no-ignore -./--hidden. Three -u/--unrestricted flags is equivalent to --no-ignore -./--hidden --binary.
The only filtering ripgrep still does when -uuu is given is to skip symbolic links and to avoid printing matches from binary files. Symbolic links can be followed via the -L/--follow flag, and binary files can be treated as text files via the -a/--text flag.
OUTPUT OPTIONS¶
-A NUM, --after-context=NUM
This overrides the --passthru flag and partially overrides the -C/--context flag.
-B NUM, --before-context=NUM
This overrides the --passthru flag and partially overrides the -C/--context flag.
--block-buffered
This overrides the --line-buffered flag.
This flag can be disabled with --no-block-buffered.
-b, --byte-offset
If ripgrep does transcoding, then the byte offset is in terms of the result of transcoding and not the original data. This applies similarly to other transformations on the data, such as decompression or a --pre filter.
This flag can be disabled with --no-byte-offset.
--color=WHEN
ripgrep will suppress color output by default in some other circumstances as well. These include, but are not limited to:
- When the TERM environment variable is not set or set to dumb.
- When the NO_COLOR environment variable is set (regardless of value).
- When flags that imply no use for colors are given. For example, --vimgrep and --json.
The possible values for this flag are:
- never
- Colors will never be used.
- auto
- The default. ripgrep tries to be smart.
- always
- Colors will always be used regardless of where output is sent.
- ansi
- Like 'always', but emits ANSI escapes (even in a Windows console).
This flag also controls whether hyperlinks are emitted. For example, when a hyperlink format is specified, hyperlinks won't be used when color is suppressed. If one wants to emit hyperlinks but no colors, then one must use the --colors flag to manually set all color styles to none:
--colors 'path:none' \
--colors 'line:none' \
--colors 'column:none' \
--colors 'match:none'
--colors=COLOR_SPEC
The format of the flag is {type}:{attribute}:{value}. type should be one of path, line, column or match. attribute can be fg, bg or style. value is either a color (for fg and bg) or a text style. A special format, {type}:none, will clear all color settings for type.
For example, the following command will change the match color to magenta and the background color for line numbers to yellow:
rg --colors 'match:fg:magenta' --colors 'line:bg:yellow'
Extended colors can be used for value when the tty supports ANSI color sequences. These are specified as either x (256-color) or x,x,x (24-bit truecolor) where x is a number between 0 and 255 inclusive. x may be given as a normal decimal number or a hexadecimal number, which is prefixed by 0x.
For example, the following command will change the match background color to that represented by the rgb value (0,128,255):
rg --colors 'match:bg:0,128,255'
or, equivalently,
rg --colors 'match:bg:0x0,0x80,0xFF'
Note that the intense and nointense styles will have no effect when used alongside these extended color codes.
--column
When -o/--only-matching is used, then the column numbers written correspond to the start of each match.
This flag can be disabled with --no-column.
-C NUM, --context=NUM
This overrides the --passthru flag. The -A/--after-context and -B/--before-context flags both partially override this flag, regardless of the order. For example, -A2 -C1 is equivalent to -A2 -B1.
--context-separator=SEPARATOR
When the context separator is set to an empty string, then a line break is still inserted. To completely disable context separators, use the --no-context-separator flag.
--field-context-separator=SEPARATOR
The - character is the default value.
--field-match-separator=SEPARATOR
The : character is the default value.
--heading
This is the default mode when printing to a tty.
When stdout is not a tty, then ripgrep will default to the standard grep-like format. One can force this format in Unix-like environments by piping the output of ripgrep to cat. For example, rg foo | cat.
This flag can be disabled with --no-heading.
-h, --help
Unlike most other flags, the behavior of the short flag, -h, and the long flag, --help, is different. The short flag will show a condensed help output while the long flag will show a verbose help output. The verbose help output has complete documentation, where as the condensed help output will show only a single line for every flag.
--hostname-bin=COMMAND
When not set (the default, or the empty string), ripgrep will try to automatically detect your system's hostname. On Unix, this corresponds to calling gethostname. On Windows, this corresponds to calling GetComputerNameExW to fetch the system's "physical DNS hostname."
ripgrep uses your system's hostname for producing hyperlinks.
--hyperlink-format=FORMAT
Alternatively, a format string may correspond to one of the following aliases: default, none, file, grep+, kitty, macvim, textmate, vscode, vscode-insiders, vscodium. The alias will be replaced with a format string that is intended to work for the corresponding application.
The following variables are available in the format string:
- {path}
- Required. This is replaced with a path to a matching file. The path is guaranteed to be absolute and percent encoded such that it is valid to put into a URI. Note that a path is guaranteed to start with a /.
- {host}
- Optional. This is replaced with your system's hostname. On Unix, this corresponds to calling gethostname. On Windows, this corresponds to calling GetComputerNameExW to fetch the system's "physical DNS hostname." Alternatively, if --hostname-bin was provided, then the hostname returned from the output of that program will be returned. If no hostname could be found, then this variable is replaced with the empty string.
- {line}
- Optional. If appropriate, this is replaced with the line number of a match. If no line number is available (for example, if --no-line-number was given), then it is automatically replaced with the value 1.
- {column}
- Optional, but requires the presence of {line}. If appropriate, this is replaced with the column number of a match. If no column number is available (for example, if --no-column was given), then it is automatically replaced with the value 1.
- {wslprefix}
- Optional. This is a special value that is set to wsl$/WSL_DISTRO_NAME, where WSL_DISTRO_NAME corresponds to the value of the equivalent environment variable. If the system is not Unix or if the WSL_DISTRO_NAME environment variable is not set, then this is replaced with the empty string.
A format string may be empty. An empty format string is equivalent to the none alias. In this case, hyperlinks will be disabled.
At present, ripgrep does not enable hyperlinks by default. Users must opt into them. If you aren't sure what format to use, try default.
Like colors, when ripgrep detects that stdout is not connected to a tty, then hyperlinks are automatically disabled, regardless of the value of this flag. Users can pass --color=always to forcefully emit hyperlinks.
Note that hyperlinks are only written when a path is also in the output and colors are enabled. To write hyperlinks without colors, you'll need to configure ripgrep to not colorize anything without actually disabling all ANSI escape codes completely:
--colors 'path:none' \
--colors 'line:none' \
--colors 'column:none' \
--colors 'match:none'
ripgrep works this way because it treats the --color flag as a proxy for whether ANSI escape codes should be used at all. This means that environment variables like NO_COLOR=1 and TERM=dumb not only disable colors, but hyperlinks as well. Similarly, colors and hyperlinks are disabled when ripgrep is not writing to a tty. (Unless one forces the issue by setting --color=always.)
If you're searching a file directly, for example:
rg foo path/to/file
then hyperlinks will not be emitted since the path given does not appear in the output. To make the path appear, and thus also a hyperlink, use the -H/--with-filename flag.
For more information on hyperlinks in terminal emulators, see: https://gist.github.com/egmontkob/eb114294efbcd5adb1944c9f3cb5feda
--include-zero
This flag can be disabled with --no-include-zero.
--line-buffered
tail -f something.log | rg foo --line-buffered | rg bar
This overrides the --block-buffered flag.
This flag can be disabled with --no-line-buffered.
-n, --line-number
This is enabled by default when stdout is connected to a tty.
This flag can be disabled by -N/--no-line-number.
-N, --no-line-number
Line numbers are off by default when stdout is not connected to a tty.
Line numbers can be forcefully turned on by -n/--line-number.
-M NUM, --max-columns=NUM
When this flag is omitted or is set to 0, then it has no effect.
--max-columns-preview
When the -M/--max-columns flag is used, ripgrep will by default completely replace any line that is too long with a message indicating that a matching line was removed. When this flag is combined with -M/--max-columns, a preview of the line (corresponding to the limit size) is shown instead, where the part of the line exceeding the limit is not shown.
If the -M/--max-columns flag is not set, then this has no effect.
This flag can be disabled with --no-max-columns-preview.
-0, --null
-o, --only-matching
--path-separator=SEPARATOR
Setting this flag to an empty string reverts it to its default behavior. That is, the path separator is automatically chosen based on the environment.
--passthru
Another way to achieve a similar effect is by modifying your pattern to match the empty string. For example, if you are searching using rg foo, then using rg '^|foo' instead will emit every line in every file searched, but only occurrences of foo will be highlighted. This flag enables the same behavior without needing to modify the pattern.
An alternative spelling for this flag is --passthrough.
This overrides the -C/--context, -A/--after-context and -B/--before-context flags.
-p, --pretty
-q, --quiet
When --files is used, ripgrep will stop finding files after finding the first file that does not match any ignore rules.
-r REPLACEMENT, --replace=REPLACEMENT
Capture group indices (e.g., $5) and names (e.g., $foo) are supported in the replacement string. Capture group indices are numbered based on the position of the opening parenthesis of the group, where the leftmost such group is $1. The special $0 group corresponds to the entire match.
The name of a group is formed by taking the longest string of letters, numbers and underscores (i.e. [_0-9A-Za-z]) after the $. For example, $1a will be replaced with the group named 1a, not the group at index 1. If the group's name contains characters that aren't letters, numbers or underscores, or you want to immediately follow the group with another string, the name should be put inside braces. For example, ${1}a will take the content of the group at index 1 and append a to the end of it.
If an index or name does not refer to a valid capture group, it will be replaced with an empty string.
In shells such as Bash and zsh, you should wrap the pattern in single quotes instead of double quotes. Otherwise, capture group indices will be replaced by expanded shell variables which will most likely be empty.
To write a literal $, use $$.
Note that the replacement by default replaces each match, and not the entire line. To replace the entire line, you should match the entire line.
This flag can be used with the -o/--only-matching flag.
--sort=SORTBY
- none
- (Default) Do not sort results. Fastest. Can be multi-threaded.
- path
- Sort by file path. Always single-threaded. The order is determined by sorting files in each directory entry during traversal. This means that given the files a/b and a+, the latter will sort after the former even though + would normally sort before /.
- modified
- Sort by the last modified time on a file. Always single-threaded.
- accessed
- Sort by the last accessed time on a file. Always single-threaded.
- created
- Sort by the creation time on a file. Always single-threaded.
If the chosen (manually or by-default) sorting criteria isn't available on your system (for example, creation time is not available on ext4 file systems), then ripgrep will attempt to detect this, print an error and exit without searching.
To sort results in reverse or descending order, use the --sortr flag. Also, this flag overrides --sortr.
Note that sorting results currently always forces ripgrep to abandon parallelism and run in a single thread.
--sortr=SORTBY
- none
- (Default) Do not sort results. Fastest. Can be multi-threaded.
- path
- Sort by file path. Always single-threaded. The order is determined by sorting files in each directory entry during traversal. This means that given the files a/b and a+, the latter will sort before the former even though + would normally sort after / when doing a reverse lexicographic sort.
- modified
- Sort by the last modified time on a file. Always single-threaded.
- accessed
- Sort by the last accessed time on a file. Always single-threaded.
- created
- Sort by the creation time on a file. Always single-threaded.
If the chosen (manually or by-default) sorting criteria isn't available on your system (for example, creation time is not available on ext4 file systems), then ripgrep will attempt to detect this, print an error and exit without searching.
To sort results in ascending order, use the --sort flag. Also, this flag overrides --sort.
Note that sorting results currently always forces ripgrep to abandon parallelism and run in a single thread.
--trim
This flag can be disabled with --no-trim.
--vimgrep
With this option, a line with more than one match will be printed in its entirety more than once. For that reason, the total amount of output as a result of this flag can be quadratic in the size of the input. For example, if the pattern matches every byte in an input file, then each line will be repeated for every byte matched. For this reason, users should only use this flag when there is no other choice. Editor integrations should prefer some other way of reading results from ripgrep, such as via the --json flag. One alternative to avoiding exorbitant memory usage is to force ripgrep into single threaded mode with the -j/--threads flag. Note though that this will not impact the total size of the output, just the heap memory that ripgrep will use.
-H, --with-filename
This flag overrides -I/--no-filename.
-I, --no-filename
This flag overrides -H/--with-filename.
--sort-files
This flag instructs ripgrep to sort search results by file path lexicographically in ascending order. Note that this currently disables all parallelism and runs search in a single thread.
This flag overrides --sort and --sortr.
This flag can be disabled with --no-sort-files.
OUTPUT MODES¶
-c, --count
If only one file is given to ripgrep, then only the count is printed if there is a match. The -H/--with-filename flag can be used to force printing the file path in this case. If you need a count to be printed regardless of whether there is a match, then use --include-zero.
This overrides the --count-matches flag. Note that when -c/--count is combined with -o/--only-matching, then ripgrep behaves as if --count-matches was given.
--count-matches
If only one file is given to ripgrep, then only the count is printed if there is a match. The -H/--with-filename flag can be used to force printing the file path in this case.
This overrides the -c/--count flag. Note that when -c/--count is combined with -o/--only-matching, then ripgrep behaves as if --count-matches was given.
-l, --files-with-matches
This overrides --files-without-match.
--files-without-match
This overrides -l/--files-with-matches.
--json
When this flag is provided, ripgrep will emit a sequence of messages, each encoded as a JSON object, where there are five different message types:
- begin
- A message that indicates a file is being searched and contains at least one match.
- end
- A message the indicates a file is done being searched. This message also include summary statistics about the search for a particular file.
- match
- A message that indicates a match was found. This includes the text and offsets of the match.
- context
- A message that indicates a contextual line was found. This includes the text of the line, along with any match information if the search was inverted.
- summary
- The final message emitted by ripgrep that contains summary statistics about the search across all files.
Since file paths or the contents of files are not guaranteed to be valid UTF-8 and JSON itself must be representable by a Unicode encoding, ripgrep will emit all data elements as objects with one of two keys: text or bytes. text is a normal JSON string when the data is valid UTF-8 while bytes is the base64 encoded contents of the data.
The JSON Lines format is only supported for showing search results. It cannot be used with other flags that emit other types of output, such as --files, -l/--files-with-matches, --files-without-match, -c/--count or --count-matches. ripgrep will report an error if any of the aforementioned flags are used in concert with --json.
Other flags that control aspects of the standard output such as -o/--only-matching, --heading, -r/--replace, -M/--max-columns, etc., have no effect when --json is set. However, enabling JSON output will always implicitly and unconditionally enable --stats.
A more complete description of the JSON format used can be found here: https://docs.rs/grep-printer/*/grep_printer/struct.JSON.html.
This flag can be disabled with --no-json.
LOGGING OPTIONS¶
--debug
The --debug flag is generally useful for figuring out why ripgrep skipped searching a particular file. The debug messages should mention all files skipped and why they were skipped.
To get even more debug output, use the --trace flag, which implies --debug along with additional trace data.
--no-ignore-messages
This flag can be disabled with --ignore-messages.
--no-messages
This flag can be disabled with --messages.
--stats
This set of aggregate statistics may expand over time.
This flag is always and implicitly enabled when --json is used.
Note that this flag has no effect if --files, -l/--files-with-matches or --files-without-match is passed.
This flag can be disabled with --no-stats.
--trace
OTHER BEHAVIORS¶
--files
This overrides --type-list.
--generate=KIND
- man
- Generates a manual page for ripgrep in the roff format.
- complete-bash
- Generates a completion script for the bash shell.
- complete-zsh
- Generates a completion script for the zsh shell.
- complete-fish
- Generates a completion script for the fish shell.
- complete-powershell
- Generates a completion script for PowerShell.
The output is written to stdout. The list above may expand over time.
--no-config
If ripgrep ever grows a feature to automatically read configuration files in pre-defined locations, then this flag will also disable that behavior as well.
--pcre2-version
--type-list
-V, --version
EXIT STATUS¶
If ripgrep finds a match, then the exit status of the program is 0. If no match could be found, then the exit status is 1. If an error occurred, then the exit status is always 2 unless ripgrep was run with the -q/--quiet flag and a match was found. In summary:
- 0 exit status occurs only when at least one match was found, and if no error occurred, unless -q/--quiet was given.
- 1 exit status occurs only when no match was found and no error occurred.
- 2 exit status occurs when an error occurred. This is true for both catastrophic errors (e.g., a regex syntax error) and for soft errors (e.g., unable to read a file).
AUTOMATIC FILTERING¶
ripgrep does a fair bit of automatic filtering by default. This section describes that filtering and how to control it.
TIP: To disable automatic filtering, use rg -uuu.
ripgrep's automatic "smart" filtering is one of the most apparent differentiating features between ripgrep and other tools like grep. As such, its behavior may be surprising to users that aren't expecting it.
ripgrep does four types of filtering automatically:
- 1.
- Files and directories that match ignore rules are not searched.
- 2.
- Hidden files and directories are not searched.
- 3.
- Binary files (files with a NUL byte) are not searched.
- 4.
- Symbolic links are not followed.
The first type of filtering is the most sophisticated. ripgrep will attempt to respect your gitignore rules as faithfully as possible. In particular, this includes the following:
- Any global rules, e.g., in $HOME/.config/git/ignore.
- Any rules in relevant .gitignore files. This includes .gitignore files in parent directories that are part of the same git repository. (Unless --no-require-git is given.)
- Any local rules, e.g., in .git/info/exclude.
In some cases, ripgrep and git will not always be in sync in terms of which files are ignored. For example, a file that is ignored via .gitignore but is tracked by git would not be searched by ripgrep even though git tracks it. This is unlikely to ever be fixed. Instead, you should either make sure your exclude rules match the files you track precisely, or otherwise use git grep for search.
Additional ignore rules can be provided outside of a git context:
- Any rules in .ignore. ripgrep will also respect .ignore files in parent directories.
- Any rules in .rgignore. ripgrep will also respect .rgignore files in parent directories.
- Any rules in files specified with the --ignore-file flag.
The precedence of ignore rules is as follows, with later items overriding earlier items:
- Files given by --ignore-file.
- Global gitignore rules, e.g., from $HOME/.config/git/ignore.
- Local rules from .git/info/exclude.
- Rules from .gitignore.
- Rules from .ignore.
- Rules from .rgignore.
So for example, if foo were in a .gitignore and !foo were in an .rgignore, then foo would not be ignored since .rgignore takes precedence over .gitignore.
Each of the types of filtering can be configured via command line flags:
- There are several flags starting with --no-ignore that toggle which, if any, ignore rules are respected. --no-ignore by itself will disable all of them.
- -./--hidden will force ripgrep to search hidden files and directories.
- --binary will force ripgrep to search binary files.
- -L/--follow will force ripgrep to follow symlinks.
As a special short hand, the -u flag can be specified up to three times. Each additional time incrementally decreases filtering:
- -u is equivalent to --no-ignore.
- -uu is equivalent to --no-ignore --hidden.
- -uuu is equivalent to --no-ignore --hidden --binary.
In particular, rg -uuu should search the same exact content as grep -r.
CONFIGURATION FILES¶
ripgrep supports reading configuration files that change ripgrep's default behavior. The format of the configuration file is an "rc" style and is very simple. It is defined by two rules:
- 1.
- Every line is a shell argument, after trimming whitespace.
- 2.
- Lines starting with # (optionally preceded by any amount of whitespace) are ignored.
ripgrep will look for a single configuration file if and only if the RIPGREP_CONFIG_PATH environment variable is set and is non-empty. ripgrep will parse arguments from this file on startup and will behave as if the arguments in this file were prepended to any explicit arguments given to ripgrep on the command line. Note though that the rg command you run must still be valid. That is, it must always contain at least one pattern at the command line, even if the configuration file uses the -e/--regexp flag.
For example, if your ripgreprc file contained a single line:
--smart-case
then the following command
RIPGREP_CONFIG_PATH=wherever/.ripgreprc rg foo
would behave identically to the following command:
rg --smart-case foo
Another example is adding types, like so:
--type-add
web:*.{html,css,js}*
The above would behave identically to the following command:
rg --type-add 'web:*.{html,css,js}*' foo
The same applies to using globs. This:
--glob=!.git
or this:
--glob
!.git
would behave identically to the following command:
rg --glob '!.git' foo
The bottom line is that every shell argument needs to be on its own line. So for example, a config file containing
-j 4
is probably not doing what you intend. Instead, you want
-j
4
or
-j4
ripgrep also provides a flag, --no-config, that when present will suppress any and all support for configuration. This includes any future support for auto-loading configuration files from pre-determined paths.
Conflicts between configuration files and explicit arguments are handled exactly like conflicts in the same command line invocation. That is, assuming your config file contains only --smart-case, then this command:
RIPGREP_CONFIG_PATH=wherever/.ripgreprc rg foo --case-sensitive
is exactly equivalent to
rg --smart-case foo --case-sensitive
in which case, the --case-sensitive flag would override the --smart-case flag.
SHELL COMPLETION¶
Shell completion files are included in the release tarball for Bash, Fish, Zsh and PowerShell.
For bash, move rg.bash to $XDG_CONFIG_HOME/bash_completion or /etc/bash_completion.d/.
For fish, move rg.fish to $HOME/.config/fish/completions.
For zsh, move _rg to one of your $fpath directories.
CAVEATS¶
ripgrep may abort unexpectedly when using default settings if it searches a file that is simultaneously truncated. This behavior can be avoided by passing the --no-mmap flag which will forcefully disable the use of memory maps in all cases.
ripgrep may use a large amount of memory depending on a few factors. Firstly, if ripgrep uses parallelism for search (the default), then the entire output for each individual file is buffered into memory in order to prevent interleaving matches in the output. To avoid this, you can disable parallelism with the -j1 flag. Secondly, ripgrep always needs to have at least a single line in memory in order to execute a search. A file with a very long line can thus cause ripgrep to use a lot of memory. Generally, this only occurs when searching binary data with the -a/--text flag enabled. (When the -a/--text flag isn't enabled, ripgrep will replace all NUL bytes with line terminators, which typically prevents exorbitant memory usage.) Thirdly, when ripgrep searches a large file using a memory map, the process will likely report its resident memory usage as the size of the file. However, this does not mean ripgrep actually needed to use that much heap memory; the operating system will generally handle this for you.
VERSION¶
14.1.1
HOMEPAGE¶
https://github.com/BurntSushi/ripgrep
Please report bugs and feature requests to the issue tracker. Please do your best to provide a reproducible test case for bugs. This should include the corpus being searched, the rg command, the actual output and the expected output. Please also include the output of running the same rg command but with the --debug flag.
If you have questions that don't obviously fall into the "bug" or "feature request" category, then they are welcome in the Discussions section of the issue tracker: https://github.com/BurntSushi/ripgrep/discussions.
AUTHORS¶
Andrew Gallant <jamslam@gmail.com>
2024-09-08 | 14.1.1 |