Yes, there's still much to learn. Do you happen to know of some
popular examples?
A lot of long-running processes that spawn several children and assign
different tasks to them will do this, for informative purposes.
(I personally think that the argv of a process is not the right place
for a user interface, and consider those daemons misguided, but still,
it's quite a common practice.)
Just off the top of my head:
sshd (from openssh)
avahi-daemon
dovecot
and even among the good guys:
readproctitle
runsvdir
One should never assume that /proc/<pid>/cmdline will contain
the command line as it was originally used to execute the process.
Do you happen to know of some reliable reference text stating that?
int main (int argc, char **argv)
Systems do not enforce that argv is read-only, so people *will* modify
it. It's just as unavoidable as death, taxes, and the nervous breakdown
of people who package systemd.
--
Laurent
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