Save redis key value to file

Some of my redis key values are very large so it's easier for me to query for one key's value and view it in a file.

Environment:
CentOS Linux release 7.3.1611 (Core)
redis server 3.2.12
redis-cli 3.2.12

If I have a key named "CST_9527d72b05eb713c20465d6bc5022775bbe3a4ffb99b261a8231e967fe1585ce" enter in either command to save the key's value to cst.txt

redis-cli --scan --pattern "CST_9527d72b05eb713c20465d6bc5022775bbe3a4ffb99b261a8231e967fe1585ce" | xargs redis-cli mget > cst.txt

echo 'GET CST_9527d72b05eb713c20465d6bc5022775bbe3a4ffb99b261a8231e967fe1585ce' | redis-cli > cst.txt

Helpful Article:

https://stackoverflow.com/questions/44826691/how-to-get-value-by-redis-cli-keys