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Timer with sound alarm
I'd prefer this one, you have to install espeak to get this running

Make directories for and mount all iso files in a folder

execute a command in case of success or execute a command in case of failure

YES = NO

Sorts and compare 2 files line by line

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"

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

list block devices
Shows all block devices in a tree with descruptions of what they are.

dstat - a mix of vmstat, iostat, netstat, ps, sar...
This is a very powerful command line tool to gather statistics for a Linux system. http://dag.wieers.com/home-made/dstat/

Remove a range of lines from a file
Delete a range of line


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