Dialyze a rebar based erlang project easily

dialyze.bash

#!/bin/bash
DIRNAME=`pwd`
PROJNAME=`basename $DIRNAME`

if [[ ! -f "$HOME/.dialyzer_otp.plt" ]];
then
    echo "OTP plt not found"
    exit -1
fi

if [[ ! -f "deps.plt" ]];
then
    rebar compile
    echo "Dialyzing dependencies"
    dialyzer --add_to_plt --plt $HOME/.dialyzer_otp.plt --output_plt deps.plt -r deps/*/ebin/
fi

rebar compile skip_deps=true

if [[ -f $PROJNAME.plt ]];
then
    dialyzer --check_plt --plt $PROJNAME.plt -r ebin/
    if [[ $? -ne 0 ]];
    then
	echo "Not up to date, dialyzing"
	dialyzer --add_to_plt --plt deps.plt --output_plt $PROJNAME.plt -r ebin/
    fi
else
    echo "Dialyzing $PROJNAME"
    dialyzer --add_to_plt --plt deps.plt --output_plt $PROJNAME.plt -r ebin/
fi

echo "Checking"
dialyzer -Werror_handling -Wrace_conditions -Wunderspecs --plt $PROJNAME.plt -r ebin/