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GRUB2: set Super Mario as startup tune

list files recursively by size

list files recursively by size

pattern match in awk - no grep
Rather than chain a string of greps together and pipe them to awk, use awk to do all the work. In the above example, a string would be output to stdout if it matched pattern1 AND pattern2, but NOT pattern3.

Delete all non-printing characters from a file
tr has some predefined sets of characters that are more convenient to use than characters codes

Add fade in/out to first & last 25 frames of a video
Replace vid.mp4 with the path to your original video file, and out.mp4 to the path where you want to save the new file. To view the output first before saving, remove "-consumer avformat:out.mp4" from the end. Documentation for mlt framework and melt command can be found here: http://www.mltframework.org/bin/view/MLT/Documentation

Vim: Switch from Horizontal split to Vertical split
This allows to switch from horizontal to vertical split, putting the current buffer on the right side of the vertical split. To put it on the right use ^W-H. In a similar way, to switch from Vertical to Horizontal, do ^W-J (for bottom) and ^W-K (for top), but you vimers all guessed that one already :P

Route outbound SMTP connections through a addtional IP address rather than your primary

list files recursively by size

List programs with open ports and connections


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