cat
cat [OPTION]... [FILE]...
Concatenate files together
A very useful command. Handy for quickly looking at a file. Also essential for joining files together. It even works on binary files.
Examples
Look at a file
cat /etc/hosts
Split a binary file into pieces and cat it back together again
$ split -b 2500k ccp151b4.tar.gz ccp151b4_ $ cat ccp151b4_aa ccp151b4_ab ccp151b4_ac > ccp151b4.tar.gz
