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Top Forums Shell Programming and Scripting Unix Shell Script to ping systems & make a log Post 302570014 by zaxxon on Wednesday 2nd of November 2011 08:56:30 AM
Old 11-02-2011
Code:
cat | ping -c 1 192.168.17.$ip >> psn.txt

What is the cat with the pipe good for?

You should maybe better check the return code of the pings with comparing $? != 0 instead of grepping for success or not. RC 0 would be a success.

Instead of the counter being increased I would rather use a time stamp so you know when it happened. Also maybe it is more interessting to know when it failed, not if it is successful. Either way it is always succesful until it fails, if you want to use it in further processing.
Also it might be interessting to use a timeout on ping which would be -W.
 

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