{{tag>bash shell}}

====== Set bash prompt to FQDN ======
Set FQDN in /etc/hosts:

  127.0.1.1 www.example.org example.org

Run script that changes hostname in kernel:

  /etc/init.d/hostname.sh

In .bashrc change:

  if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
  else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w\$ '
  fi

to

  if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@$(hostname -f)\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
  else
    PS1='${debian_chroot:+($debian_chroot)}\u@$(hostname -f):\w\$ '
  fi

Logout then login again.

====== Tested on ======
  * Debian 8 Jessie

====== See also ======

====== References ======