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creating you're logging function for your script
You could also pipe to logger.

determine if tcp port is open
Requires netcat.

convert video to gif by ffmpeg and imagemagick
you can use any common video format. if you don't need to change the size of gif output, just remove `-vf scale=320:-1` btw, 320:-1 means width is 320px and height would be set automatically

Create a video screencast of any x11 window, with audio
The script gets the dimensions and position of a window and calls ffmpeg to record audio and video of that window. It saves it to a file named output.mkv

Print all the lines between 10 and 20 of a file
Subtly different to the -n+p method... and probably wrong in so many ways....... But it's shorter. Just.

Pick a random line from a file

concatenate avi files
concatenates avi files

Trim png files in a folder
That should be a short as it can get.

Watch the progress of 'dd'
dcfldd is a forensic version of dd that shows a process indicator by default.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.


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