proc_pid_cmdline(5)           File Formats Manual          proc_pid_cmdline(5)

NAME
       /proc/pid/cmdline - command line

DESCRIPTION
       /proc/pid/cmdline
              This read-only file holds the complete command line for the
              process, unless the process is a zombie.  In the latter case,
              there is nothing in this file: that is, a read on this file will
              return 0 characters.

              For processes which are still running, the command-line
              arguments appear in this file in the same layout as they do in
              process memory: If the process is well-behaved, it is a set of
              strings separated by null bytes ('\0'), with a further null byte
              after the last string.

              This is the common case, but processes have the freedom to
              override the memory region and break assumptions about the
              contents or format of the /proc/pid/cmdline file.

              If, after an execve(2), the process modifies its argv strings,
              those changes will show up here.  This is not the same thing as
              modifying the argv array.

              Furthermore, a process may change the memory location that this
              file refers via prctl(2) operations such as PR_SET_MM_ARG_START.

              Think of this file as the command line that the process wants
              you to see.

SEE ALSO
       proc(5)

Linux man-pages 6.9.1             2024-06-15               proc_pid_cmdline(5)