Did you download a large file? Or do you have a file that you have a suspicion about? The best way to ensure the file comes from a verified source is by measuring its checksum. A checksum is almost ...

When you download application installers and other files from the Internet, you may see a verification checksum associated with it. Here is how to use that number. When you download a file in OS X, ...

A checksum is a string of characters which uniquely identifies afile, a digital fingerprint. Change even a few bytes of a file–forexample, by infecting it with a virus or replacing an old versionwith ...

You're about to click on a download button and notice a weird looking code next to it. It doesn't seem to have anything to do how big the file is or whether it's ...

If you would like to verify two copies of files or two mirrored directories, there are some Terminal commands that will let you do just that. Topher, an avid Mac user for the past 15 years, has been a ...