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. Topher, an avid Mac user for the ...

The md5sum utility is used to calculate what is called the fingerprint of a file. A small tutorial for the program "md5" or "md5sum" commonly called "checksum". (The checksum is a value of 128 bits ...

Unix systems provide numerous ways to compare files. The most common way to verify that you have received or downloaded the proper file is to compute a checksum and compare it against one computed by ...

Copies of files sometimes represent a big waste of disk space and can cause confusion if you want to make updates. Here are six commands to help you identify these files. In a recent post, we looked ...