Well I know the internet is filled with documents like this having examples and so on of bash commands. But here goes another one, these are few that I find usefull

Searching

Most often we want to search some pattern in the text, perform some modifications quickly or sort data. Awk is really helpful.

References

1. https://www.netmeds.com/prescriptions/tresiba-penfill-100iu-cartridge-1x3ml