Take screenshot from command line

Take a screenshot of your desktop using the SCROT utility. Basic usage is to call the scrot command in a console, but this would take an instant screenshot of the desktop in the current directory. Thus it would be better used along with the “-d” (delay) option in order to have a time buffer to place the desired objects on the desktop.

Extract audio from video file

Since there are so many tools (Minitube, youtube-dl) which allows you to download video files from YouTube or other video sharing sites, let’s go one step further and extract the sound from the downloaded video file to a mp3 file. The FFmpeg tool will do the trick just fine