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 ...

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 ...

Sudo lets you run any terminal command as another user — hence "substitute user" — but the default and most common use for it ...