Delete keys matching a pattern from Redis

redis-delkeys.sh

#!/bin/sh
#
# Usage: ./redis-delkeys.sh [-h host] [-p port] [-n db] pattern
#
# Matches keys with the KEYS command matching pattern
#   and deletes them from the specified Redis DB.

set -e

HOST="localhost"
PORT="6379"
DB="0"
while getopts "h:p:n:" opt; do
    case $opt in
        h)  HOST=$OPTARG;;
        p)  PORT=$OPTARG;;
        n)  DB=$OPTARG;;
        \?) echo "invalid option: -$OPTARG" >&2; exit 1;;
    esac
done
shift $(( $OPTIND -1 ))
PATTERN="$@"
if [ -z "$PATTERN" ]; then
    echo "pattern required" >&2
    exit 2
fi

redis-cli -h $HOST -p $PORT -n $DB --raw keys $PATTERN |
    xargs redis-cli -h $HOST -p $PORT -n $DB del

xargs: unmatched single quote; by default quotes are special to xargs unless you use the -0 option

Couldn't get it to work, possibly because I had really complex messy keys (my key is a stringified json object that caches function results by the function parameter contents). So maybe I just fell outside the supported search parameters?

Anyways, for other people looking for this functionality, what did work for me was https://www.npmjs.com/package/redis-utils-cli.

Thanks for all the good work though, no disrespect intended with this link to an alternative.