ref: 3873e5e8670dc2a851e38f414b027bf84c06c4b2 dir: /scripts/get_waf.sh/
#! /bin/sh set -e set -x WAFURL=https://waf.io/waf-1.9.12 ( which wget > /dev/null && wget -qO waf $WAFURL ) || ( which curl > /dev/null && curl $WAFURL > waf ) chmod +x waf