Unix permissions control who can read, write or execute a file. You can limit it to the owner of the file, the group that owns it or the entire world. For security reasons, files and directories ...

Apple's autocorrect on iPhone and iPad always aims to help when you're typing a message, but it's by no means perfect, and some of the replacements it continually spews out can be frustrating.

PC storage drives used to be pretty expensive if you wanted higher capacities, and the same was true for SSDs when they first came out. Over time, the price per GB of storage leveled out, so that both ...