I am constantly amazed when I search for bash commands and get page after page of terminal shortcuts or linux commands like cat, ls, and set.
Having said the above, my list of essential bash commands:
|Code||bash shell script|
|Description||script that performs various memory profiles to produce a memory footprint of an application of set of applictions|
memprof is a script that will generate a memory profile of an application or set of applications.
I typically setup and use conky on most of my linux computers. This article show's my typical conky setup along with the items / addons used to achieve the setup. I've also attached my .conkyrc file for reference or use but please note that you may want to adjust it (for example, the keymap list will be useless to you).