Question

I want to open a new tmux session and window with cmus in it or, if alredy running, attach to it. At Ubuntuusers I found this Script that should do it.

1. #!/bin/bash
2. SESSION=main
3. tmux="tmux -2 -f tmux.conf"
4. 
5. # if the session is already running, just attach to it.
5. $tmux has-session -t $SESSION
7. if [ $? -eq 0 ]; then
8.   echo "Session $SESSION already exists. Attaching."
9.   sleep 1
10.  $tmux attach -t $SESSION
11.  exit 0;
12.  fi

I alredy know that i can do manually it with

tmux new -n music cmus

But when I use it in the script I only get the Message

usage: new-session [-d] [-n window-name] [-s session-name] [-t target-session] [-x width] [-y height] [command]

I also tried it with new-session, but no change. I have absolutly no clue whats the problem with the command or the script or both

Answer 1

The way I solved this is to have a main tmux session, that programs like mutt or cmus can either start or connect to. For example, for cmus I have an alias:

alias cmus='monkeys -n music cmus'

With monkeys being the following script:

#! /bin/sh

name=monkeys

# make sure tmux server is running:
tmux start-server

# determine if monkeys session is running:
tmux has-session -t ${name}

# no monkeys running, create monkeys,
# if more than one argument, take it as a command to run 
# on monkeys, else just attach to monkeys
if [ "$?" != "0" ]; then
    tmux new-session -s ${name} $*
elif [ $# -gt 0 ]; then
    tmux new-window -t ${name} $*
else
    tmux a -t ${name}
fi