The simplest grep command looks like the one shown below. This “find string in file” command will show all the lines in the file that contain the string, even when that string is only part of a longer ...

With -w, grep will match “error” but skip things like “errors” or “terror.” The difference can be subtle, but when you’re ...

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: ...