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Remove a line in a text file. Useful to fix
In this case it's better do to use the dedicated tool

Lets Tux say the random fact. [add it to .bashrc to see it in new terminal window]

convert from decimal to hexadecimal

Display connections histogram
Displays a connection histogram of active tcp connections. Works even better under an alias. Thanks @Areis1 for sharing this one.

Open a file in a GTK+ dialog window
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.

Chrome sucks

List all files/folders in working directory with their total size in Megabytes

Create a new file

Swap a file or dir with quick resotre
This lets you replace a file or directory and quickly revert if something goes wrong. For example, the current version of a website's files are in public_html. Put a new version of the site in public_html~ and execute the command. The names are swapped. If anything goes wrong, execute it again (up arrow or !!).

Quickly display a string as Qr Code
Takes the first argument (string) and display a Qr code version of that.


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