Thank you! That list is perfect since I don't use these tools often enough to remember them and some are hard to find again without knowing exactly what to search for.

I also discovered pawk on it which looks interesting, I made a somewhat related tool [1] which is probably out of scope for your list, but can be used in some of the same ways [2] and may of of interest nonetheless.

[1] https://github.com/elesiuta/pyxargs

[2] cat /etc/hosts | pyxargs -d \n --im json --pre "d={}" --post "print(dumps(d))" --py "d['{}'.split()[0]] = '{}'.split()[1]"