Add restic install script

restic-install.sh

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+v="$1"
+url="https://github.com/restic/restic/releases/download/v${v}/"
+file="restic_${v}_linux_amd64"
+pack="${file}.bz2"
+
+wget -O /tmp/${pack} "${url}${pack}"
+wget -O /tmp/resticsha256 "${url}SHA256SUMS"
+wget -O /tmp/resticsha256.asc "${url}SHA256SUMS.asc"
+
+(cd /tmp/; sha256sum --ignore-missing --check /tmp/resticsha256)
+(cd /tmp/; bunzip2 ${pack})
+mv /tmp/${file} /usr/local/bin/restic
+chmod +x /usr/local/bin/restic
+
+