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Old 23rd June 2012
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jggimi jggimi is offline
More noise than signal
 
Join Date: May 2008
Location: USA
Posts: 7,975
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First, because I've said it many times before, and you paid no attention:

BACK UP YOUR SYSTEM BEFORE YOU UPDATE IT!!!

Thank you. I hope I was sufficiently clear. Now, to your question:

Use "i" only when you have no local changes to a file. It installs the file directly from the fileset, and if you had any local changes, they will be lost. If you make a mistake, you can recover from the back up in /var/tmp, or, failing that, from the back up you should have taken.

Use "m" when you need to "merge" your local changes and a revised file. By default, the tool used is sdiff(1). Please, read that man page, and practice merging with a few text files you create yourself, so that you understand how to use the tool.

This post may seem like a spoon feeding. It is. You are addicted to the spoon, my friend.
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