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pgrep: introduce support for namespaces

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A PID should be specified with --ns:
	$ pgrep --ns 12345
which will only match the processes which belong to to the same 6
namespaces. It is also possible to specify which namespaces to test:
	$ pgrep --ns 12345 --nslist mnt,net,ipc
which will match processes that belong to the same mount, network and
IPC namespaces as PID 12345.

Signed-off-by: Aristeu Rozanski <arozansk@redhat.com>
This commit is contained in:
Aristeu Rozanski
2013-04-12 14:40:27 -04:00
parent a01ee3c0b3
commit de7b3b9222
5 changed files with 117 additions and 4 deletions
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9
pgrep.1
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@ -146,6 +146,15 @@ than
\fB\-L\fR, \fB\-\-logpidfile\fR
Fail if pidfile (see -F) not locked.
.TP
\fB\-\-ns \fIpid\fP
Match processes that belong to the same namespaces. Required to run as
root to match processes from other users. See \-\-nslist for how to limit
which namespaces to match.
.TP
\fB\-\-nslist \fIname\fP,...
Match only the provided namespaces. Available namespaces:
ipc, mnt, net, pid, user,uts.
.TP
\fB\-V\fR, \fB\-\-version\fR
Display version information and exit.
.TP