Mike Banahan, et al
Linux books are starting to be a dime a dozen these days. I still remember the days before the 1998 Linux boom when all I could find as far as Linux literature is regarded was the Using Linux book published by Que and O’Reilly’s Running Linux, aside from the wonderful online documentation [...]

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Another question that comes up in the mailing lists every now and then. How do you make changes to already existing user accounts, such as adding another user group to it, or perhaps changing the home directory, setting an expiration date, etc.? You can use the usermod command, such as in:

usermod -d /home/newhomedir [...]

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No, it\’s not easy to do and there is no guarantee that you will recover all the files that you removed. However, the Linux Ext2fs Undeletion mini-HOWTO may help you.

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It happens quite often that you may remove a user account from a system and yet there are files owned by that user left behind. Of course, the same applies to group accounts. In those cases, you could perform the following search in order to find them:

find / -nouser -print
find / -nogroup -print

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