centos man page for yum-aliases

yum-aliases(1)															    yum-aliases(1)

NAME
       yum aliases plugin

SYNOPSIS
       yum [options] alias

DESCRIPTION
       This  plugin changes other commands in yum, much like the alias command in bash. There are a couple of notable differences from shell style
       aliases though. The alias command has three forms:
	* alias
	* alias command
	* alias command result

       The first form lists all current aliases with their final result, the second form looks up a "command" and shows it's final  result  or	an
       error message. The last form creates a new alias.

Explanation of alias to final result conversion
       When  you  type	an aliased command, like "yum --disableexcludes UPT lsu" using the default aliases, the yum-aliases plugin first takes the
       first "command", by skipping over any options, and then looks up the result (in this case "UPT" is converted to "--enablerepo=updates-test-
       ing").  If  there  is  a  match,  then  it  will  replace the aliased "command" in the argument list and try again (again skipping over any
       options). By convention, in the default aliases list, alias "commands" that are in all CAPS only add options so you  can  join  together  a
       chain of them before any real command or aliased command.

       There  are two things that can alter the above, if you have the "recursive" configuration option set to off then alias processing will stop
       after the first alias to command substitution. Also, like in shell aliases, if the result starts with  then alias processing will stop.

EXAMPLES
       To create a new alias command called "rm" which does the same thing as the command "remove" use:

	      yum alias rm remove

       To always add the --skip-broken --disableexcludes=all --obsoletes options to the update command (but leaving the upgrade option alone), you
       could use:

	      yum alias update update	--skip-broken --disableexcludes=all --obsoletes

       To override the default "up" alias to use the above update command, and never ask for confirmation, you could use:

	      yum alias up update -y

AUTHORS
	      James Antill <james@and.org>

SEE ALSO
       yum-utils(1) yum(1)

James Antill							  31 March 2008 						    yum-aliases(1)