A redis-cli helper to delete keys by a pattern (using docker run)

redis-cli-del-keys.sh

#!/bin/bash

if [ "$1" -eq '--help' ] && {
    echo "usage: redis-cli-del-keys.sh <pattern e.g. user:*> -h <hostname> -n <db-number> [<other connection parameters|...>]"
    exit 1
}

docker run --rm redis redis-cli ${@:2} --scan --pattern $1 | sort | uniq | sed 's|\s\+| |g' | xargs docker run --rm redis redis-cli ${@:2} del