ken@titan ~/tmp/pm_11151665_io_socket
$ ls -l
total 4
-rwxr-xr-x 1 ken None 387 Apr 15 13:51 client.pl
-rwxr-xr-x 1 ken None  50 Apr 15 11:57 process.sh
-rwxr-xr-x 1 ken None 464 Apr 15 13:58 server.pl
-rw-r--r-- 1 ken None 200 Apr 15 14:01 test.log