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 ...

You never know when one of your files might reach someone it wasn't intended to reach—perhaps through an email forward, a USB stick left behind on a desk, or maybe ...