Bash completion for ssh

ssh

# Store in /etc/bash_completion.d/ssh
# Create a ~/.ssh/hosts file that includes the hostnames you want to autocomplete
# Example: `Host hostname`
# Found this idea here https://unix.stackexchange.com/a/181603
_ssh() 
{
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    opts=$(grep '^Host' ~/.ssh/config ~/.ssh/hosts| grep -v '[?*]' | cut -d ' ' -f 2-)

    COMPREPLY=( $(compgen -W "$opts" -- ${cur}) )
    return 0
}
complete -F _ssh ssh
# You can add any aliases that do different things here too
# complete -F _ssh sshalias