A handy shell script for generating a distribution of your Java Maven project as a CLI tool. The uses `mvn package` to create a jar file, writes out a little script to call the jar. For this to work, use shade or something to bundle the dependencies into the jar. With assembly, update the script to work with the assembly jar. Also, be sure to se…

make-dist

#!/usr/bin/env bash
REBUILD_CMD=rebuild
if [ "$1" == "help" ] || [ "$1" == "-h" ] || [ "$1" == "--help" ] || [ "$1" == "-?" ] ; then
    cat<<EOF
Usage: $0 [$REBUILD_CMD]

    With '$REBUILD_CMD', the script rebuilds the package Jar.

EOF
    exit 0
fi
PROJ_POM=$(tr -d '\n ' < pom.xml)
PROJ_NAME=$(echo $PROJ_POM | perl -pe 's/^.*?<name>([^<]*)<.*$/\1/')
PROJ_VERS=$(echo $PROJ_POM | perl -pe 's/^.*?<version>([^<]*)<.*/\1/')
PROJ_FULL=$PROJ_NAME-$PROJ_VERS
PROJ_JAR=$PROJ_FULL.jar
if [ ! -e target/$PROJ_JAR ] || [ "$1" == "$REBUILD_CMD" ] ; then
    echo -n 'building package... ' >/dev/stderr
    mvn clean package 2>&1 1>/dev/null
    if [ -e target/$PROJ_JAR ] ; then
        echo 'done' >/dev/stderr
    else
        echo 'problem. run `mvn package` manually' >/dev/stderr
        exit 1
    fi
fi
cd target
echo java -jar \$\(dirname \$0\)/$PROJ_JAR > $PROJ_FULL
chmod +x $PROJ_FULL
ln -sf $PROJ_FULL $PROJ_NAME
echo -n 'building binary distributable... ' >/dev/stderr
BIN_DIST=$PROJ_FULL.tgz
tar -zcf $BIN_DIST $PROJ_FULL $PROJ_JAR $PROJ_NAME 2>/dev/null
if [ -e $BIN_DIST ] ; then
    echo 'done' >/dev/stderr
else
    echo "problem. run `tar -zcf $BIN_DIST $PROJ_FULL $PROJ_JAR $PROJ_NAME` manually" 2>/dev/null
    exit 1
fi