sh-3.2# ./test.pl 
open3: close(5) failed: Bad file number at ./test.pl line 21
sh-3.2# ps -ef | grep /bin/cat
    root  6124  6106   1 12:57:29 pts/3       0:00 grep /bin/cat
    root  6122     1   1 12:57:21 pts/3       0:00 /bin/cat
sh-3.2# Blah blah this is text coming from my telnet session