Command Description a2p Creates a Perl script from an awk script. ac Prints statistics about users' connect time. alias Create a name for another command or long command string. ar Maintain portable archive or library. arch Display the architecture of the current host. arp Manipulate the system ARP cache. as An assembler. at Command scheduler. awk Awk script processing program. basename Deletes any specified prefix from a string. bash Command Bourne interpreter bc Calculator. bdiff Compare large files. bfs Editor for large files. bg Continues a program running in the background. biff Enable / disable incoming mail notifications. break Break out of while, for, foreach, or until loop. bs Battleship game. bye Alias often used for the exit command. cal Calendar calendar Display appointments and reminders. cancel Cancels a print job. cat View or modify a file. cc C compiler. cd Change directory. chdir Change directory. checkeq Language processors to assist i...