Commands by paulera (13)

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Scale,Rotate, brightness, contrast,...with Image Magick
$rotate: the rotate angle $width, $height: width and height to scale to $birghtness: change brighness

Bingo-like raffle
Random choose numbers from 1 to 100 with 5 seconds interval without duplicates.

Generate a list of items from a couple of items lists A and B, getting (B - A ) set
ItemsListtoAvoid (A) could be a list of files with a special characteristic to exclude. It can be a result of previous processing list, ex. a list of files containing a special string. AlItemsList.txt (B) Is a complete list of items including some or all items in A. $Difference is saved in ItemsDifference.txt

bypass any aliases and functions for the command
A simple directive which disables all aliases and functions for the command immediately following it. Shortcut for the bash built-in 'command' - "command linefoo". Think, {sic}...

generate random mac-address using md5sum + sed

Print number of mb of free ram
This will show the amount of physical RAM that is left unused by the system.

turn off auto hard disc boot scanning for ext3

Get max number of arguments
Get max number of arguments that can be accepted by the exec() system call.

Selecting a random file/folder of a folder
Also looks in subfolders

Make directory including intermediate directories
This will create the intermediate directories that do not exist. I did not know about this for a long time.


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