Prevent non-root users from logging in

touch /etc/nologin
Also with optional message: echo "no login for you" > /etc/nologin (This doesn't affect your current X session - you're already logged in!)

By: udim
2009-04-29 19:43:14

These Might Interest You

  • Logs all users out except root. I changed the grep to use a regexp in case a user's username contained the word root.

    who -u | grep -vE "^root " | kill `awk '{print $7}'`
    ProfessorTux · 2010-11-05 17:43:41 1
  • Only to logout all users except root

    who -u | grep -vE "^root " | kill `awk '{print $6}'`
    leosimon · 2010-11-13 16:51:09 0
  • shows some logging for the git repo. Show Sample Output

    git log --stat
    bbelt16ag · 2012-06-01 07:53:34 0
  • This is something I wrote for myself, to use on a server that I manage where the users have cryptic usernames, and I'd like to tag them with clear text. I'll modify it in the future to parse /etc/password which is the database where this information is from (which is a better way to achieve this). Add the following line to your .bashrc to check it out: function fingr() { sudo printf "User Name [$1]:" && sudo printf "\n\n\n\n\n" | sudo chfn $1 | grep : ; } The idea to write something like that came after reading this post (I'm not affiliated): $ fingr root User Name [root]: Full Name [Mr. Root]: Room Number []: Work Phone [555-GOT-ROOT]: Home Phone [] Other [Root account]: Show Sample Output

    fingr root
    nate5 · 2017-07-10 21:33:48 0

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

You must be signed in to comment.

What's this? is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

Share Your Commands

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.


Subscribe to the feeds.

Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):

Subscribe to the feed for: