A scratchpad for the boring part of list wrangling

A lot of sysadmin work involves a list that's almost usable — an export with duplicate entries, mixed case, stray blank lines, or missing a common prefix like a domain suffix or a CIDR notation — and turning it into something a script or config file can consume cleanly. This tool exists for exactly that in-between step: applying transforms directly and visibly, one at a time, so you can see the effect of each one before moving to the next, rather than writing a one-off shell pipeline for a task you'll do once and never need again.

The operations are deliberately simple and composable rather than clever — dedupe doesn't sort, sort doesn't dedupe, trim doesn't remove empty lines — so that chaining a few of them together produces exactly the transformation you'd expect, in the order you applied them.