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commandlinefu.com is the place to record those command-line gems that you return to again and again.

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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Change the primary group of a user

Terminal - Change the primary group of a user
usermod -g group user
2012-05-24 12:39:46
User: tduvally
Functions: usermod
Change the primary group of a user


There are 4 alternatives - vote for the best!

Terminal - Alternatives
useradd -g linux anish && id
2012-05-24 17:38:46
User: anishchib
Functions: useradd

small -g option add user to initial login group (primary group).

The group name must exist.

Know a better way?

If you can do better, submit your command here.

What others think

note that group changes do not get picked up by existing processes (like the current shell, or the GUI desktop environment). You can log out and log back in to pick up the change, or as root do "su -l user" to get a shell with the new group membership active.

Comment by dmmst19 260 weeks and 6 days ago

When you want to add a user to a group without losing the user's original group membership, use:

usermod -a -G newgroup username
Comment by linuxrawkstar 260 weeks and 1 day ago

Your point of view

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