Commands by kev (116)

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Set laptop display brightness
Run as root. Path may vary depending on laptop model and video card (this was tested on an Acer laptop with ATI HD3200 video). $ cat /proc/acpi/video/VGA/LCD/brightness to discover the possible values for your display.

Remove a range of lines from a file
Deletes lines to of a file. You must put the end line first in the range for the curly brace expansion, otherwise it will not work properly.

Get the size of all the directories in current directory (Sorted Human Readable)
This allows the output to be sorted from largest to smallest in human readable format.

Change the console keyboard layout

exclude a column with awk
Here's an awk alternative, for those lacking the version of cut with the --complement argument.

Learn the difference between single and double quotes

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Merge several pdf files into a single file
merge a.pdf b.pdf and c.pdf and create ./out.pdf

Which processes are listening on a specific port (e.g. port 80)
swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

Write comments to your history.
A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.


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