using customised list of hosts from a text file to execute a set of commands

Dear All

I am facing an issue where in i have an array of host not fit for the built in selection criteria (roughly 200 devices), i don't want to select nodes directly as my fingers give up shuffling between control+click

So the question to make life better is -- How to run a job on hosts from a text file (instead of using built-in simple / complex condition)

Many Thanks

Regards
Sagar