Commands by aq4x (0)

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Command to rename multiple file in one go
An entirely shell-based solution (should work on any bourne-style shell), more portable on relying on the rename command, the exact nature of which varies from distro to distro.

List your installed Firefox extensions

print line and execute it in BASH
!# is the currennt line so far, by using !#:- you can go from the second arg (it's zero indexed) to the last ($) (did I understand the problem correctly?)

Visualizing system performance data

Vlc ncurses mode browsing local directorys.

Ad blocking on Ubuntu phone/tablet with hosts file
Will append lines to the hosts file to do some basic ad blocking.

Remove all unused kernels with apt-get
Note the double space: "...^ii␣␣linux-image-2..." Like 5813, but fixes two bugs: [1]This leaves the meta-packages 'linux-headers-generic' and 'linux-image-generic' alone so that automatic upgrades work correctly in the future. [2]Kernels newer than the currently running one are left alone (this can happen if you didn't reboot after installing a new kernel). I'm bummed that this took 228 characters. I'd like to see a simpler version.

ROT13 using the tr command

kill all process that belongs to you

delete a particular line by line number in file
deletes line 3 in known_hosts text file

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