Also with optional message:
echo "no login for you" > /etc/nologin
(This doesn't affect your current X session - you're already logged in!)
Requires the "wajig" package to be installed.
This is the fastest method to search the Debian package database. Requires the dlocate package. The dlocate db updates periodically, but you may force an update with # dlocate-update
Replace FILE with a filename (or - for stdin).
commandlinefu.com 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.
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.
» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10
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: