I don't know if they're taught these days-- they weren't when I was in school-- but sed & awk are two tools I'd recommend to pretty much everyone. I remember s

I don't know if they're taught these days-- they weren't when I was in school-- but sed & awk are two tools I'd recommend to pretty much everyone. I remember stumbling on to them in my first job and thinking an very much appreciating their power over having to write a small program to iterate through an arbitrary # of files to do something... and another small program if I wanted to do something slightly different, etc.