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Full Discussion: Scripting Help - Display Processes
Top Forums Shell Programming and Scripting Scripting Help - Display Processes Post 302387817 by isxrc on Monday 18th of January 2010 11:09:06 AM
Old 01-18-2010
Scripting Help - Display Processes
Hi, I was wondering if somebody could help me as I am struggling with writing a script for a training course.

Ive had to write 5 scripts and this is the last one but am struggling with this even though I understand what it is meant to do.....

PROBLEM: write a script which will allow you to find all users logged on to the system and display the processes they are running. The heading for each user must be their real name not the log in name.

I have identified I need to first use the "finger" command to obtain the full name of a user.

I then need to use ps -u to display the processes info underneath the name of the user.

I believe that this should be added to a while loop which then repeats the process in order to obtain the info for each user.

Please note I am not allowed to use sed or awk for this assignment.

Below is the code I have come up with so far. I think I am getting there but am unsure how to progress. Any help would be appreciated.


#!/bin/bash


name= finger | cut -d' ' -f 2-3 | sort

while read | line
do

echo $name
echo ps -u $line

done
 

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LEARN ABOUT LINUX

startpar

STARTPAR(8)						      System Manager's Manual						       STARTPAR(8)

NAME

       startpar - start runlevel scripts in parallel

SYNOPSIS

       startpar [-p par] [-i iorate] [-t timeout] [-T global_timeout] [-a arg] prg1 prg2 ...
       startpar [-p par] [-i iorate] [-t timeout] [-T global_timeout] -M [ boot|start|stop]

DESCRIPTION

       startpar  is  used  to run multiple run-level scripts in parallel.  The degree of parallelism on one CPU can be set with the -p option, the
       default is full parallelism. An argument to all of the scripts can be provided with the -a option.  Processes block  by	pending  I/O  will
       weighting by the factor 800.  To change this factor the option -i can be used to specify an other value.

       The  output  of	each  script is buffered and written when the script exits, so output lines of different scripts won't mix. You can modify
       this behaviour by setting a timeout.

       The timeout set with the -t option is used as buffer timeout. If the output buffer of a script is not empty and the last output was timeout
       seconds ago, startpar will flush the buffer.

       The  -T option timeout works more globally. If no output is printed for more than global_timeout seconds, startpar will flush the buffer of
       the script with the oldest output. Afterwards it will only print output of this script until it is finished.

       The -M option switches startpar into a make(1) like behaviour.  This option takes three different arguments:  boot,  start,  and  stop  for
       reading .depend.boot or .depend.start or .depend.stop respectively in the directory /etc/init.d/.  By scanning the boot and runlevel direc-
       tories in /etc/init.d/ it then executes the appropriate scripts in parallel.

FILES

       /etc/init.d/.depend.boot
       /etc/init.d/.depend.start
       /etc/init.d/.depend.stop

SEE ALSO

       init.d(7), insserv(8), startproc(8).

COPYRIGHT

       2003,2004 SuSE Linux AG, Nuernberg, Germany.
       2007 SuSE LINUX Products GmbH, Nuernberg, Germany.

AUTHOR

       Michael Schroeder <mls@suse.de>
       Takashi Iwai <tiwai@suse.de>
       Werner Fink <werner@suse.de>

								     Jun 2003							       STARTPAR(8)
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