Create tarball from git repo

create-tar.gz.sh

#!/bin/sh
[ ! -z "$1" ] || exit
NAME=$1 ; cd $NAME
DATESTAMP=$(date +"%Y%m%d")
VERSION=$(git describe master --tags --match='v*' | sed 's/^v//' | cut -d- -f1)
COMMIT=$(git rev-parse --short=5 HEAD)
git archive master --format=tar.gz --prefix=$NAME-$VERSION~git$DATESTAMP.$COMMIT/ -o ../$NAME-$VERSION~git$DATESTAMP.$COMMIT.tar.gz

create-tar.xz.sh

#!/bin/sh
[ ! -z "$1" ] || exit
NAME=$1 ; cd $NAME
DATESTAMP=$(date +"%Y%m%d")
VERSION=$(git describe master --tags --match='v*' | sed 's/^v//' | cut -d- -f1)
COMMIT=$(git rev-parse --short=5 HEAD)
git archive master --prefix=$NAME-$VERSION+git$DATESTAMP.$COMMIT/ | xz -c > ../$NAME-$VERSION+git$DATESTAMP.$COMMIT.tar.xz