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.
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:
Use acpi and notify-send to report current temperature every five minutes.
Works best in a shell script run at startup. acpi is called for temperature and fed to notify-send for a tooltip. After waiting five minutes, it will start over.
works best in a shell script run at startup. It will ping localhost once and output to null, after it does that, acpi is called for temperature in fahrenheit and piped through to another loop that feeds notify-send for a tooltip. After waiting five minutes, it will start over.
"The -b (background) option tells sudo to run the given command in the background." -- after it asks you for the password in the foreground.
Take advantage of sudo keeping you authenticated for ~15 minutes.
The command is a little longer, but it does not require X (it can run on a headless server).
Need package: gksu
Launching gui app in background that needs sudo, won't work great with our old
friendly style of launching:
sudo gedit /etc/passwd &
because this would put sudo in background !
Using gksudo as demonstrated, would popup a gui sudo window.
May be this is a common knowledge, but not knowing this
frustrated me during my newbie year.
I use zenity because it's a rewrite of gdialog and also replaces gmessage and has more useful options.
Using --text-info allows you to select and copy the text to your clipboard.
To see a file in a list dialog: cat /etc/passwd | zenity --width 800 --height 600 --list --column Entries
If you don't have zenity, you'll have to download it via apt-get install zenity, etc.
This command is useful when you want to know what process is responsible for a certain GUI application and what command you need to issue to launch it in terminal.