Remote mounting of unix file system

mount_remote

# mounting remote file systems
# References:
# http://www.larkinweb.co.uk/computing/mounting_file_systems_over_two_ssh_hops.html
# http://www.neverstopbuilding.com/mount-ssh-on-osx
export MOUNTS=$HOME/mounts

mount_remote() {
    echo "Trying to mount to: $1"
    if [ "$1" == "1hopmachine" ] ; then

        MOUNTDIR=$MOUNTS/$1
        if [ ! -d $MOUNTDIR ] ; then
            mkdir -p $MOUNTDIR
        fi
        echo "mounting $1 to $MOUNTDIR"

        # only mount home directory on spirit (also compress -C)
        sshfs -C $USER@one.hop.machine.org:/path/to/mount $MOUNTDIR

        cd $MOUNTDIR
    elif [ "$1" == "2hopmachine" ]; then
        MOUNTDIR=$MOUNTS/$1
        if [ ! -d $MOUNTDIR ] ; then
            mkdir -p $MOUNTDIR
        fi
        # find one that works ...
        PORT="shuf -i 2000-65000 -n 1"
        # PORT="jot -r 1  2000 65000"
        # PORT=$(python -S -c "import random; print random.randrange(2000,63000)")
        # PORT="awk 'BEGIN{srand();print int(rand()*(63000-2000))+2000 }'"
        
        echo "mounting $1 to $MOUNTDIR via port $PORT"

        ssh -C -f $USER@middlehopmach.my.network.org -L $PORT:$1.my.network.org:22 -N
        sshfs -C -p $PORT $USER@localhost:/ $MOUNTDIR
        cd $MOUNTDIR
    else
        echo "Unsupported remote mount, try spirit or a hydro machine (i.e. hydra or thermal) or edit your mount_remote function"
    fi
    }