The Linux hash command provides information about commands on your system or those you've run recently, but what you see depends on the shell you are using. When you type “hash” on a Linux system, you ...

Let's say I want to get the sha1sum of a DVD without having to rip the ISO to a file on my HDD first. How would I go about this? On Linux, I'd just run "sha1sum /dev/dvd". But I need a solution for ...

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 ...