commandlinefu.com is the place to record those command-line gems that you return to again and again.
Delete that bloated snippets file you've been using and share your personal repository with the world. 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.
If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/
You can sign-in using OpenID credentials, or register a traditional username and password.
First-time OpenID users will be automatically assigned a username which can be changed after signing in.
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:
Curl is not installed by default on many common distros anymore. wget always is :)
wget -qO- ifconfig.me/ip
-P tells grep to use perl regex matches (only works on the GNU grep as far as I know.)
Or even easier, if it's available:
killall firefox
I have no idea why you would want to rely on two unusual dependencies to do something that can be done a hundred ways from coreutils...
Removes all empty lines: ^$
and all lines starting with hash: ^#
Usefull for when you don't have nmap and need to find a missing host.
Pings all addresses from 10.1.1.1 to 10.1.1.254, modify for your subnet.
Timeout set to 1 sec for speed, if running over a slow connection you should raise that to avoid missing replies.
This will clean up the junk, leaving just the IP address:
for i in {1..254}; do ping -c 1 -W 1 10.1.1.$i | grep 'from' | cut -d' ' -f 4 | tr -d ':'; done
Prints a log of phonecalls placed from/to an asterisk server, formated into an easily readable table.
You can use partial number/queue matches, or use .* to match everything.
Gets the IP addresses of all interfaces except loopback. Cuts out all of the extra text.
Shorter than the other options, and much easier to type.
'ifconfig | grep cast' is enough to get the IP address, but it doesn't strip the rest of the junk out.