* linux commands -
 descr's (only by known term, not by writing in the definition) link - whne not on a 0 comp: https://0.die.net/man/1/head
* understand parts of a computer code - *https://explainshell.com/

 - ex - *https://explainshell.com/explain?cmd=grep+"1"+test.txt, https://explainshell.com/explain?cmd=______ <- fill in code, spaces -> +'s
* 
*shortcuts 
- https://ss64.com/bash/
*form fields - all: https://openlibrary.org/type
*remove quotes: https://gist.github.com/NapoleonWils0n/4052768
*remove strings: https://stackoverflow.com/questions/15236237/using-sed-to-replace-text-with-spaces-with-a-defined-variable-with-slashs
*remove multiple strings: https://gist.github.com/un33k/1162378

grep - mult strings: https://www.poftut.com/grep-multiple-strings-patterns-regex-text-file-linux/