Halloween has come and gone. In fact, so has Thanksgiving. But some masks are always appropriate – not because we’re trying to inspire people to give us candy, but because it’s just too easy to end up ...

The Linux umask setting plays a big role in determining the permissions that are assigned to files that you create. But what’s behind this variable, and how do the numbers relate to settings like rwxr ...

I once locked myself out of my files with a simple mistyped command. This was the first time I rendered my Linux installation unusable, and it was because I didn’t understand permissions. While I ...