#### 3.5.2.13 Aliasing ¶

Mail command: alias [alias [address...]] ¶
Mail command: a [alias [address...]] ¶
Mail command: group [alias [address...]] ¶
Mail command: g [alias [address...]] ¶

  With no arguments, prints out all currently-defined aliases. With one argument, prints out that alias. With more than one argument, creates a new alias or changes an old one.

Mail command: unalias [alias...] ¶
Mail command: una [alias...] ¶

  Takes a list of names defined by alias commands and discards the remembered groups of users. The alias names no longer have any significance.

Mail command: alternates name... ¶
Mail command: alt name... ¶

  The alternates command is useful if you have accounts on several machines. It can be used to inform mail that the listed addresses are really you. When you reply to messages, mail will not send a copy of the message to any of the addresses listed on the alternates list. If the alternates command is given with no argument, the current set of alternate names is displayed.