Ever download a folder full of files, only to notice all of the documents inside are zipped shut and encrypted—basically the digital version of Fort Knox? These are examples of the ever-wonderful, yet ...

The zip command lets you compress files to preserve them or back them up, and you can require a password to extract the contents of a zip file. Zipping files allows ...

A file extension, or file name extension, is the letters immediately shown after the last period in a file name. For example, the file extension.txt has an extension of .txt. This extension allows the ...