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This is embarrassing; I used the usermod command to add myself to the disk group. However I forgot to use the append option! so I'm not a member of any of the groups that I was originally, now terminal says that I'm not even a sudoer (How rude!). So the question is: What are the original groups that a normal Administrator type of user is in? BTW, I am using Linux Mint Debian Edition (LMDE).

Any help is appreciated.

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up vote 2 down vote accepted

This is what I have by default in sid:

ice@distantstar:~ ➜ groups
ice cdrom floppy audio dip video plugdev scanner bluetooth netdev
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If you have not made other changes, /etc/group- should have have your old settings.

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But group- only shows the list of groups not their members, am I right? – Auxiliary Jul 1 '12 at 13:41
It should show members. Your primary group should be in /etc/passwd- also. These should all be backup copies, but are overwritten if you makes another change. System files or settings should never be changed without first backing up. – johnshen64 Jul 1 '12 at 13:44

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