Script to initiate a single node Hadoop cluster in a tmux session

hadoop-tmux.sh

#!/bin/bash
#
# Script to initiate (or connect to) a single node Hadoop cluster in a
# tmux session. Requires that tmux and hadoop are on your path.

SESSION=hadoop

tmux has-session -t $SESSION
if [ $? -eq 0 ]; then
	echo "Session $SESSION already exists. Attaching."
	sleep 1
	tmux attach -t $SESSION
	exit 0;
fi

tmux new-session -d -s $SESSION 2> /dev/null

tmux new-window -t $SESSION:0 -k -n namenode 'hadoop namenode'
tmux new-window -t $SESSION:1 -n datanode 'hadoop datanode'
tmux new-window -t $SESSION:2 -n jobtracker 'hadoop jobtracker'
tmux new-window -t $SESSION:3 -n tasktracker 'hadoop tasktracker'

tmux attach -t $SESSION