I don't know perl or sed/awk/grep that well, but I know JavaScript pretty damn well.. So what do I do?

Look up man pages or Google Stack Overflow answers for 15 minutes to do what I need?

Or I can just use nip and write a quick snippet that does what I know and move onto what's most important, the task I was trying to accomplish.

In the end, nobody cares how I renamed all the images from lolimag_{i}.jpg to 2015_05_20_img_{i}.jpg, they just care that I did it.