If you thought grep was powerful, wait until you get a hold of ast-grep, which takes it to a whole new level.

As a relatively isolated junior sysadmin, I remember seeing answers on Experts Exchange and later Stack Exchange that baffled me. Authors and commenters might chain 10 commands together with pipes and ...

I am a bit stumped by this. I am no expert at sed/awk/grep, though I can usually find my way around... youngka@vadmin:~/www/nsr_19_data$ grep -iE '^[[:digit:]]+~[0-9 ...