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24 rodolico 1 
#! /usr/bin/perl -w
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# http://www.cyberciti.biz/tips/linux-display-open-ports-owner.html
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@list = `lsof -i | grep xfce4-ses`;
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print "Users Logged in\n";
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for ( $i = 0;$i < @list; $i++ ) {
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   my ( $COMMAND,$PID,$USER,$FD,$TYPE,$DEVICE,$SIZE,$NODE,$NAME ) = split ( " +", $list[$i] );
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   print "$USER\t$PID\txfce4\n";
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}
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@list = `w`;
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for ( $i=2; $i < @list; $i++ ) {
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   my ( $USER,$TTY,$FROM,$LOGIN,$IDLE,$JCPU,$PCPU,$WHAT ) = split( " +", $list[$i] );
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   print "$USER\t$TTY\tconsole\n";
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}
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