Get pid by command (NOT ONLY by executable file name, different from `pidof` project) Sample: $ pid /usr/sbin/securityd -i

pid

#!/bin/sh
# Flora Pid by LeaskH.com

# Main logic
aPs="`ps -ef | grep "$*" | grep -v "grep $*" | grep -v "$0 $*"`"
pid="`echo "$aPs" | grep -v "pid" | head -1 | awk '{print $2}'`"
if [ "$pid" ]; then
    echo $pid
    exit 0
fi
echo 0
exit 1