Best practice for command prompt mods

[Toby Kelsey]

Tom Smith wrote:

> PS1='${debian_chroot:+($debian_chroot)}\u@`hostname --fqdn`:\w\$ '

My only comment is that this will run the command again each time you have an
interactive prompt.  If you want to avoid the (minor) overhead you could first
save the output in a variable:

   fqdn=$(hostname --fqdn)
   PS1= ... ${fqdn} ...

This will only run once when you start a new interactive shell.

Toby