a name you define by using the alias built-in shell command

a unique, short name that is assigned to a command

When using the PE command line debugger, pdbx, you can create abbreviations for existing commands using the pdbx alias command. These abbreviations are know as command aliases.

An alternative name for a command. When you type the alias, the command is substituted for the alias. Aliases are useful when you remember commands by names other than their UNIX system names; for example, DOS users may think of dir rather than ls when they want to list a directory. Aliases are also useful for creating commands that perform several UNIX system commands at once. See the Operating System User's Guide for more information.