Search for a running process by PID or process name

psg.sh

#!/bin/sh
# Search for a running process.

EXPECTED_ARGS=1
usage() {
        echo "Usage: `basename $0` process"
}
[ $# -ne $EXPECTED_ARGS ] && usage && exit 65

proc_str=$1
srch_str=$(echo $proc_str | sed 's/^\([a-zA-Z0-9]\)\(.*\)/\1\2/')
ps -eo user,pid,ppid,stime,time,cmd | grep "[S]TIME\|$srch_str" | grep -v "`basename $0`\|$$"