Linux In The Shell aims to explore the use of many commands a user can run in the Bash Shell. Tutorials include a write up with examples, an audio component about the write up, and a video component to demonstrate the usage of the command.
The website is https://www.linuxintheshell.com/
Math from the Linux command line is one of those tasks that is not as straight forward as you may think. There are many tools that will allow you to perform mathematical functions accessible to you, but to perform simple arithmetic is not as simple as just entering some equation. You can use the echo command to perform basic mathematical problems but it does not allow for decimals making division in particular problematic.
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