NAME¶
/proc/pid/environ - initial environment
DESCRIPTION¶
- /proc/pid/environ
- This file contains the initial environment that was set when the currently
executing program was started via execve(2). The entries are
separated by null bytes ('\0'), and there may be a null byte at the end.
Thus, to print out the environment of process 1, you would do:
-
$ cat /proc/1/environ | tr '\000' '\n'
- If, after an execve(2), the process modifies its environment (e.g.,
by calling functions such as putenv(3) or modifying the
environ(7) variable directly), this file will not reflect
those changes.
- Furthermore, a process may change the memory location that this file
refers via prctl(2) operations such as
PR_SET_MM_ENV_START.
- Permission to access this file is governed by a ptrace access mode
PTRACE_MODE_READ_FSCREDS check; see ptrace(2).