I was also thinking of writing for myself a couple of "one-liner" utilities. But then, I'm wondering: what is easier/quicker/handier (btw, is handier proper English?) when you want to, e.g. "print lines 5 thru 70 to STDOUT"?:

• Just type:
  cat whatever | perl -ne 'print if 5..70'
  
• Write a perl script that does exactly that and nothing more, stuff it into some directory, and then try hard too remember how it's called, where it is and how it works, when you need it. IMHO, you'd be better off typing the whole one-liner.

Still, a kind of Cookbook dedicated to one-liners might be helpful, not for copy'n'pasting the recipes "as is", but merely as a source of inspiration.

My € 0.02

--bwana147