Opens remote cmus screen in current shell. Starts cmus if it's not running.

pimus.sh

#!/bin/bash
pimus()
{
    # Try to show cmus screen, start new cmus instance into cmus screen if not available
    if ! screen -qr cmus; then
        
        # Start new cmus into cmus screen
        screen -mdS cmus cmus

        # Wait for cmus socket (up to 5x5 seconds)
        for (( i=0; i < 5; i++ )); do 

            # Do not wait if socket does exist already
            [ -f .cmus/socket ] && break

            # Wait for a file created in .cmus folder with 5 seconds timeout and store inotifywait output for later use.
            event=`inotifywait -qt 5 -e create .cmus`

            # Receive status
            status=$?

            # Act on status zero or one, ignore status two wich appears if inotifywait timed out
            case $status in
                0) 
                    # All okay, if the socket file was created, break loop
                    [ "`echo $event | cut -d " " -f 3-`" == "socket" ] && break
                    ;;
                1) 
                    # Exit if there was an error
                    exit
                    ;; 
            esac
            # Loop end
        done

        # Start playing
        cmus-remote -p

        # Show screen
        screen -r cmus
    fi
}