With -w, grep will match “error” but skip things like “errors” or “terror.” The difference can be subtle, but when you’re trying to be precise, it matters a lot. I use this when I’m searching through ...

The everlastingly useful grep command can change its character with the flip of a switch to help you find things. The grep command – likely one of the first ten commands that every Unix user comes to ...

Linux commands often have long lists of options they support, many of which are single-letter mnemonics. These can be tricky to learn and remember, but their redeeming feature is their reusability: ...

I once asked a software developer at work how many times we called fork() in our code. I’ll admit, it was a very large project, but I expected the answer to be — at most — two digits. The developer ...