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Full Discussion: How to close a unix port
Operating Systems AIX How to close a unix port Post 302521616 by rmcc4444 on Wednesday 11th of May 2011 11:25:25 PM
Old 05-12-2011
Quote:
Originally Posted by mrn6430
I have an issue with port 7331 on our Unix box that is hung, It is stuck in a listen status:

ukh-o2-jcaps1:/tstjcaps6/apptest2> netstat -a|grep 7331
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.59010 CLOSE_WAIT
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.59215 CLOSE_WAIT
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.59459 CLOSE_WAIT
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.59668 CLOSE_WAIT
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.59912 CLOSE_WAIT
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.60130 CLOSE_WAIT
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.60361 CLOSE_WAIT
tcp4 1019 0 ukh-o2-jcaps1.7331 10.230.6.7.60578 CLOSE_WAIT
tcp 0 0 *.7331 *.* LISTEN


the lsof shows no PID id is using it. Nothing is displayed. It looks like it is stuck and we need to close it. How do we force close a port w/o a PID process is using it? Thanks
Try these..

Code:
 netstat --tcp --udp --listening --program

or

Code:
 fuser -v 7331/tcp

That should tell you what program is associated with the port.

This should all tell you a bit more and now you can kill it.

Code:
 fuser -vk 7331/tcp

 

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PAPS(1) 						      General Commands Manual							   PAPS(1)

NAME
paps - UTF-8 to PostScript converter using Pango SYNOPSIS
paps [options] files... DESCRIPTION
paps reads a UTF-8 encoded file and generates a PostScript language rendering of the file. The rendering is done by creating outline curves through the pango ft2 backend. OPTIONS
These programs follow the usual GNU command line syntax, with long options starting with two dashes (`-'). A summary of options is included below. --landscape Landscape output. Default is portrait. --columns=cl Number of columns output. Default is 1. Please notice this option isn't related to the terminal length as in a "80 culums terminal". --font=desc Set the font description. Default is Monospace 12. --rtl Do right to left (RTL) layout. --paper ps Choose paper size. Known paper sizes are legal, letter and A4. Default is A4. Postscript points Each postscript point equals to 1/72 of an inch. 36 points are 1/2 of an inch. --bottom-margin=bm Set bottom margin. Default is 36 postscript points. --top-margin=tm Set top margin. Default is 36 postscript points. --left-margin=lm Set left margin. Default is 36 postscript points. --right-margin=rm Set right margin. Default is 36 postscript points. --gutter-width=gw Set gutter width. Default is 40 postscript points. --help Show summary of options. --header Draw page header for each page. --markup Interpret the text as pango markup. --lpi Set the lines per inch. This determines the line spacing. --cpi Set the characters per inch. This is an alternative method of specifying the font size. --stretch-chars Indicates that characters should be stretched in the y-direction to fill up their vertical space. This is similar to the texttops behaviour. AUTHOR
paps was written by Dov Grobgeld <dov.grobgeld@gmail.com>. This manual page was written by Lior Kaplan <kaplan@debian.org>, for the Debian project (but may be used by others). April 17, 2006 PAPS(1)
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