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| author | Masatake YAMATO <yamato@redhat.com> | 2018-02-24 18:03:11 +0900 |
|---|---|---|
| committer | Craig Small <csmall@enc.com.au> | 2018-03-02 21:48:23 +1100 |
| commit | 7f5971058ae1a6241d03335e763a00f78da49737 (patch) | |
| tree | 86535075938f08b157a548ada2ca8b3f658dc666 /pidof.1 | |
| parent | 1ddd17b17c99ba82af9a3758433f29bec3114802 (diff) | |
| download | procps-ng-7f5971058ae1a6241d03335e763a00f78da49737.tar.gz | |
pidof: allow to change a separator put between pids
I frequency use pidof command with strace system call tracer.
strace can trace MULTIPLE processes specified with "-p $PID"
arguments like:
strace -p 1 -p 1030 -p 3043
Sometimes I want to do as following
strace -p $(pidof httpd)
However, above command line doesn't work because -p option
is needed for specifying a pid. pidof uses a whitespace as
a separator. For passing the output to strace, the separator
should be replaced with ' -p '.
This maybe not a special to my use case.
This commit introduces -S option that allows a user to specify a
separator the one wants.
$ ./pidof bash
./pidof bash
24624 18790 12786 11898 11546 10766 7654 5095
$ ./pidof -S ',' bash
./pidof -S ',' bash
24624,18790,12786,11898,11546,10766,7654,5095
$ ./pidof -S '-p ' bash
./pidof -S '-p ' bash
24624-p 18790-p 12786-p 11898-p 11546-p 10766-p 7654-p 5095
$ ./pidof -S ' -p ' bash
./pidof -S ' -p ' bash
24624 -p 18790 -p 12786 -p 11898 -p 11546 -p 10766 -p 7654 -p 5095
$ strace -p $(./pidof -S ' -p ' bash)
strace -p $(./pidof -S ' -p ' bash)
strace: Process 24624 attached
strace: Process 18790 attached
strace: Process 12786 attached
...
Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Diffstat (limited to 'pidof.1')
| -rw-r--r-- | pidof.1 | 5 |
1 files changed, 5 insertions, 0 deletions
@@ -27,6 +27,8 @@ pidof -- find the process ID of a running program. .IR omitpid[,omitpid..] ] .RB [ \-o .IR omitpid[,omitpid..].. ] +.RB [ \-S +.IR separator ] .B program .RB [ program.. ] .SH DESCRIPTION @@ -47,6 +49,9 @@ shells running the named scripts. Tells \fIpidof\fP to omit processes with that process id. The special pid \fB%PPID\fP can be used to name the parent process of the \fIpidof\fP program, in other words the calling shell or shell script. +.IP "-S \fIseparator\fP" +Use \fIseparator\fP as a separator put between pids. Used only when +more than one pids are printed for the program. .SH "EXIT STATUS" .TP .B 0 |