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Full Discussion: Help with xargs
Top Forums Shell Programming and Scripting Help with xargs Post 302781193 by axiopisty on Friday 15th of March 2013 05:00:07 PM
Old 03-15-2013
Help with xargs
Using the bash shell I'm trying to either create a command for the command line or a script that will show netstat info for a given process name. Here is an example of what I'm trying to do:
Code:
$ ps aux |grep catalina |grep -v grep | awk '{print $2}'
5132
$ netstat -nlp |grep 5132
(Not all processes could be identified, non-owned process info
 will not be shown, you would have to be root to see it all.)
tcp        0      0 0.0.0.0:8000            0.0.0.0:*               LISTEN      5132/java       
tcp6       0      0 :::8009                 :::*                    LISTEN      5132/java       
tcp6       0      0 :::8080                 :::*                    LISTEN      5132/java       
tcp6       0      0 127.0.0.1:8005          :::*                    LISTEN      5132/java

I would like to be able to use xargs such that the output from the first command is used as input to grep in the second command. How would I put all this together to have one "simple" command to search for all the ports being listened to by a particular application?

If it were put in a script I would like to be able to pass in the name of the application I'm searching for so I could run the above like this:
Code:
$ show_netstat_for_app.sh catalina

 

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LEARN ABOUT MOJAVE

serialver

serialver(1)						      General Commands Manual						      serialver(1)

NAME

       serialver - serial version command

SYNOPSIS

       serialver [ options ] [ classnames ]

       options
	      Command-line options, as specified in this document.

       classnames
	      One or more class names.

DESCRIPTION

       serialver returns the serialVersionUID for one or more classes in a form suitable for copying into an evolving class.  When invoked with no
       arguments, it prints a usage line.

OPTIONS

       -classpath  <directories and zip/jar files separated by:>
		      Set search path for application classes and resources.

       -show	      Displays a simple user interface.  Enter the full class name and press either the Enter key or the Show  button  to  display
		      the serialVersionUID.

       -Joption       Pass  option to the Java virtual machine, where option is one of the options described on the man page for the java applica-
		      tion launcher, java(1). For example, -J-Xms48m sets the startup memory to 48 megabytes. It is a common convention for -J	to
		      pass options to the underlying virtual machine.

SEE ALSO

       See (or search java.sun.com) for the following:

       java.io.ObjectStreamClass @
	    http://java.sun.com/j2se/1.5/docs/api/java/io/ObjectStreamClass.html

								   24 June 2004 						      serialver(1)
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