Move to Iceland » command http://www.movetoiceland.com Fri, 10 Feb 2012 02:28:55 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 http://creativecommons.org/licenses/by-nc-sa/3.0/us/ Remote diffhttp://www.movetoiceland.com/archives/639 http://www.movetoiceland.com/archives/639#comments Tue, 29 Apr 2008 15:57:34 +0000 Paul http://www.movetoiceland.com/?p=639 I just had a problem to solve: Compare two server config files on two servers to make sure they’re the same. Rather than using scp to copy the file from one machine to another, I used ssh’s ability to run commands remotely to get the contents of the file and piped it into diff. Here’s an example:

ssh user@server1 'cat /path/to/config/file.conf' | diff /path/to/other/config/file.conf -


I’ll leave it as an exercise for the user to write a shell script that will do this automatically, though it should be fairly easy to do.

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