tmux-create-window-for-many-hosts-tj-edition

tmux-create-window-for-many-hosts-tj-edition

#!/bin/sh

# A split window generator for tmux.
# Copyright 2014, James Andariese
# For what it's worth.
# MIT license.

# If things go wrong, it tends to leave either a single or many windows open with your local shell.
# I don't fix that because I don't care even a little bit.
# Don't do things wrong and be prepared to hit control D if you do.  The cost of fixing is greater.

# You will also need the following (or similar) in your tmux.conf
# bind * command-prompt -p "hosts" "run '~/bin/tmux-create-windows-for-many-hosts-tj-edition %%'"
# bind ^ setw sync

# If you do C-b *, you will be presented with a prompt.  If you enter api{1..3} web{3..6}, it will
# attempt to connect, as root, to apis 1 through 3 and webs 3 through 6.
# If you enter instead ubuntu@api{1..3} root@web{3..6}, it will connect to the same hosts but
# the apis will be connected to as the user "ubuntu".

# Pro tip: don't name your hosts with an @ in -- it's impossible.

truth() {
    # This version allows bash generators on the command line
    bash -c "echo $1"
    # This version gets truth from the ssh config
    #cat ~/.ssh/config | awk '/^ *Host / {print $2}'
}

justice() {
    # This version allows bash generators on the command line
    cat
    # This version gets truth from the ssh config
    #grep -E "$1"
}

connect() {
    SPLIT=no #don't split first time
    for X in `truth "$1" | justice "$1"`;do
        if [ $SPLIT = yes ];then
            #don't split first time
            tmux split-window
            tmux select-layout tiled > /dev/null
        fi
        SPLIT=yes
        tmux send 'ssh -l '"$SSHUSER"' "'"$X"'" ; exit' 'enter'
    done
}

tmux neww

while [ "$#" -gt 0 ];do
    connect "$1"
    shift
    [ $# -lt 1 ] && break
    tmux split-window
    tmux select-layout tiled > /dev/null
done

tmux setw sync > /dev/null 2>&1 # sync by default or not?

Truth for finding all the hosts. Justice for culling the herd.