set key value
get key
set cnt 100
incr cnt
incrby cnt 50
mset a 1 b 2 c 3
mget a b c
type key
randomkey // random get a key
clear // clear the screen
rename old new
renamex old new // if new exists, this will fail
dbsize // total amount of keys
push pop
rpush list A C F G // left push return the list length
lpush list B
lrange list 0 -1 // output list[0,-1]
exists list
del list
rpush list A B C
rpop list
