有趣的bash脚本随记

# see https://www.mediawiki.org/wiki/Parsoid/Setup#Configuration
for var in $domains
do
    if [ -z "${!var}" ]; then
        echo >&2 "The $var variable must not be an empty string";
    fi

    cat <<EOT >> config.yaml
          -
            uri: '${!var}'
            domain: '${var:15}'
EOT
done

domains="${!PARSOID_DOMAIN_*} ${!PARSOID_MWAPIS_*}"