proc_pid_environ(5) File Formats Manual proc_pid_environ(5)
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 en-
tries 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).
SEE ALSO
proc(5)
Linux man-pages 6.7 2023-08-15 proc_pid_environ(5)
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