Bash Completion for SSH

.bash_completion_ssh.sh

# MIT License
# 
# Copyright (c) 2016 Marco Montalbano
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.


# Bash Completion for SSH and SFTP.
# thanks http://unix.stackexchange.com/a/181603
#
# Type `ssh [tab][tab]` for a list of your Hosts configured in your
# `~/.ssh/config`.
#
# HOW TO INSTALL
# * download this file under your home folder `~/`.
# * add `source ~/.bash_completion_ssh` to your `.bash_profile`.

function _ssh {
  local cur prev opts
  COMPREPLY=()
  cur="${COMP_WORDS[COMP_CWORD]}"
  prev="${COMP_WORDS[COMP_CWORD-1]}"
  opts=$(grep '^Host' ~/.ssh/config | grep -v '[?*]' | cut -d ' ' -f 2-)

  COMPREPLY=( $(compgen -W "$opts" -- ${cur}) )
  return 0
}

complete -F _ssh ssh sftp