bash - how to extract the PID of a process by command line -

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i want pid of process namely "cron" command line. tried following script.

ps ax|grep 'cron'

but getting part of table,

   1427 ?        ss     0:00 /usr/sbin/cron -f 24160 pts/5    s+     0:00 grep --color=auto cron

how extract pid ?

just use pidof, rather use other commands , apply post-processing actions on them.

$ pidof cron 22434

to make command return 1 pid pertaining to process, use -s flag

-s single shot - instructs program return 1 pid.


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