extract this script from the baseline

git-shell/release.sh

@@ -0,0 +1,69 @@
+#!/bin/sh
+
+# Build the portable Git Shell
+
+test -z "$1" && {
+	echo "Usage: $0 <version> [optional components]"
+	exit 1
+}
+
+die () {
+	echo "$*" >&1
+	exit 1
+}
+
+ARCH="$(uname -m)"
+case "$ARCH" in
+i686)
+	BITNESS=32
+	;;
+x86_64)
+	BITNESS=64
+	;;
+*)
+	die "Unhandled architecture: $ARCH"
+	;;
+esac
+VERSION=$1
+shift
+TARGET="$HOME"/PortableGit.7z
+OPTS7="-m0=lzma -mx=9 -md=64M"
+#TMPPACK=/tmp.7z
+SCRIPT_PATH="$(cd "$(dirname "$0")" && pwd)"
+
+case "$SCRIPT_PATH" in
+*" "*)
+	die "This script cannot handle spaces in $SCRIPT_PATH"
+	;;
+esac
+
+
+# Generate a couple of files dynamically
+
+mkdir -p "$SCRIPT_PATH/root/etc" ||
+die "Could not make etc/ directory"
+
+mkdir -p "$SCRIPT_PATH/root/tmp" ||
+die "Could not make tmp/ directory"
+
+# Make a list of files to include
+LIST="$(ARCH=$ARCH BITNESS=$BITNESS \
+	PACKAGE_VERSIONS_FILE="$SCRIPT_PATH"/root/etc/package-versions.txt \
+	sh "$SCRIPT_PATH"/../make-file-list.sh "$@")" ||
+die "Could not generate file list"
+
+# 7-Zip will strip absolute paths completely... therefore, we can add another
+# root directory like this:
+
+LIST="$LIST $SCRIPT_PATH/root/*"
+
+# Make the self-extracting package
+
+type 7za ||
+pacman -Sy --noconfirm p7zip ||
+die "Could not install 7-Zip"
+
+cd / && 7za a $OPTS7 $TARGET $LIST
+echo "Success! You will find the new installer at \"$TARGET\"."
+
+rm -rf $SCRIPT_PATH/root