Create update archives, with all changed files, from a git repostiry

build_update_archive.sh

#!/bin/bash

if [ -z "$1" ] || [ -z "$2" ]; then
	echo -e "usage: buil <fromTAG> <toTAG> <outputFOLDER>\n";
	echo -e "Creates a ZIP file with all files that where changed between the fromTAG and the toTag."
	echo -e "Parameters:\n";
	echo -e "\t<fromTag>\t the tag FROM which you want to update";
	echo -e "\t<toTag>\t\t the tag TO which you want to update";
	echo -e "\t<outputFOLDER>\t the folder where the generated zip archive will be saved\n";
	echo -e "If you leave the outputFOLDER parameter empty, no archive will be created";
	echo -e "but list with changed files is printed.\n\n";
	echo -e "Note: fromTAG and toTAG can also be a branch or a commit.\n";
	echo -e "ATTENTION: The script does not check if the target file exists.\nIf it exists, it will be overwritten.";
	exit;
fi

changedFiles=$(git diff --name-only ${1} ${2});

if [ -n "$1" ] && [ -n "$2" ] && [ -z "$3" ]; then
	echo $changedFiles;
fi

if [ -n "$1" ] && [ -n "$2" ] && [ -n "$3" ]; then
	repoName=$(basename `git rev-parse --show-toplevel`);
	outputFileName="${3}/${repoName}_from_${1}_to_${2}_UPDATE.zip";
	git archive -o ${outputFileName} ${2} ${changedFiles};
fi