getgitdiff - Script that archive the files from range of commits in git repo

getgitdiff

#!/bin/bash

VERSION="0.1"
IDENT="latest"

if [ $# -lt 2 ] ; then
    printf "getgidiff - created by [email protected]\n"
    printf "Version:$VERSION\n"
    printf "Usage:\n\tgetgitdiff {earlier-commit} {some-commit} [package-identification]\n"
    exit 1;
fi

NOW="$(date +'%d-%m-%Y-%H-%M-%S')"
if [ -z "$3" ] ; then
   IDENT="latest-$NOW"
else
   IDENT="$3-$NOW"
fi

git diff --name-only $1 $2 | xargs -d'\n' git archive -o ../$IDENT.zip $2

echo "Done: file ../$IDENT.zip created."