Download and verify Borg Backup executable (stable release)

download_borg.sh

#!/usr/bin/env bash

# This script is tested on OS X (10.12.6)
# but is likely to work on Linux

RED="\033[1;31m"
GREEN="\033[1;32m"
ENDC="\033[0m"

# STABLE RELEASE
BORG_LINK="https://github.com/borgbackup/borg/releases/download/1.0.11/"
BORG_EXEC="borg-macosx64"
BORG_SIG="borg-macosx64.asc"

THOMAS_WALDMAN_KEY="6D5BEF9ADD2075805747B70F9F88FB52FAF7B393"

if [ -x $(command -v wget) ]; then
	wget -nv ${BORG_LINK}${BORG_EXEC}
	wget -nv ${BORG_LINK}${BORG_SIG}
elif [ -x $(command -v curl) ]; then
	curl -sSL -o ${BORG_EXEC}  ${BORG_LINK}${BORG_EXEC}
	curl -sSL -o ${BORG_SIG}   ${BORG_LINK}${BORG_SIG}
fi

if [ -x $(command -v gpg) ]; then
	gpg --keyserver pgp.mit.edu --recv-keys ${THOMAS_WALDMAN_KEY}
	gpg --verify ${BORG_SIG} ${BORG_EXEC}
	if [ "$?" -ne 0 ];then
		printf "[ ${RED}FAILED${ENDC} ] Signature verification.\n"
		rm -vi ${BORG_EXEC} ${BORG_SIG}
		exit 1
	else
		printf "[ ${GREEN}OK${ENDC} ] Signature verification.\n"
	fi
else
	echo "Please download ${RED}GPG${ENDC} to verify the downloaded file."
	exit 1
fi