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Full Discussion: Slow Script Execution.
Top Forums Shell Programming and Scripting Slow Script Execution. Post 302532924 by bartus11 on Wednesday 22nd of June 2011 11:34:19 AM
Old 06-22-2011
Try this:
Code:
netstat -atu | perl -nae '$F[3]=~/:(\d+)$/;$i++ if $1>32767;END{print "Free anon ports: ",32767-$i,"\n"}'

Note that I used netstat -atu, which will show only TCP and UDP ports, without UNIX sockets present in netstat -an, which might confuse your calculations (6th column in UNIX sockets output shows inode number which might fall into the port range while grepping).
 

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AA-UNCONFINED(8)						     AppArmor							  AA-UNCONFINED(8)

NAME
aa-unconfined - output a list of processes with tcp or udp ports that do not have AppArmor profiles loaded SYNOPSIS
aa-unconfined DESCRIPTION
aa-unconfined will use netstat(8) to determine which processes have open network sockets and do not have AppArmor profiles loaded into the kernel. BUGS
aa-unconfined must be run as root to retrieve the process executable link from the /proc filesystem. This program is susceptible to race conditions of several flavours: an unlinked executable will be mishandled; an executable started before a AppArmor profile is loaded will not appear in the output, despite running without confinement; a process that dies between the netstat(8) and further checks will be mishandled. This program only lists processes using TCP and UDP. In short, this program is unsuitable for forensics use and is provided only as an aid to profiling all network-accessible processes in the lab. If you find any bugs, please report them at <http://https://bugs.launchpad.net/apparmor/+filebug>. SEE ALSO
netstat(8), apparmor(7), apparmor.d(5), aa_change_hat(2), and <http://wiki.apparmor.net>. AppArmor 2.7.103 2012-06-28 AA-UNCONFINED(8)
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