A quick way to delete redis keys from the command line would be:
redis-cli DEL "del_key"
If you wish to delete all keys matching a certain pattern,
redis-cli KEYS "*del_pattern*" | xargs redis-cli DEL
A more easy shell script for it would be:
Save it as redis-delete.sh and you can just run it as:
./redis-delete.sh del_pattern
UPDATE:
The above code using KEYS does not scale well and so for a more performance efficient code, we can use SCAN which is a cursor-based iterator.