1 #!/bin/sh
2 
3 flag=''
4 if [ "x$1" = "x-a" ]
5 then
6 	flag=-a
7 	shift
8 fi
9 
10 user=`whoami`
11 case $# in
12 0)
13 	user=`whoami`
14 	;;
15 1)
16 	user=$1
17 	;;
18 *)
19 	echo 'usage: psu [-a] [user]' 1>&2
20 	exit 1
21 esac
22 
23 ps $flag | grep "^$user "