# pidfile

Pidfiles are used to know the pid of a specific program. See man pidfile(3) file for more info.

See following example to see how it could be used.

$cat /var/run/syslog.pid 37964$ ps 37964; echo $? PID TT STAT TIME COMMAND 37964 ?? Isp 0:00.03 syslogd: [priv] (syslogd) 0$ ps 12345; echo \$?
PID TT  STAT       TIME COMMAND
1