redis> sadd myset a

(integer) 1
redis> sadd myset b
(integer) 1
redis> sadd myset c d ef
(integer) 3
redis> sadd myset c d e f
(integer) 2
redis> smembers myset
1) "d"
2) "c"
3) "f"
4) "b"
5) "ef"
6) "e"
7) "a"
redis>
redis> srem myset 5
(integer) 0
redis> smembers myset
1) "d"
2) "c"
3) "f"
4) "b"
5) "ef"
6) "e"
7) "a"
redis> srem myset ef
(integer) 1
redis> smembers myset
1) "d"
2) "c"
3) "f"
4) "b"
5) "e"
6) "a"
redis> scard myset
(integer) 6
redis> sismember myset a
(integer) 1
redis> sismember myset aa
(integer) 0
redis>
redis>
redis>
redis> sadd set1 a b c
(integer) 3
redis>
redis> sadd set2 a b d
(integer) 3
redis>
redis>
redis> smembers set1
1) "c"
2) "b"
3) "a"
redis> smembers set2
1) "d"
2) "b"
3) "a"
redis>
redis> sdiff set1 set2
1) "c"
redis> sinter set1 set2
1) "b"
2) "a"
redis> sunion set1 set2
1) "b"
2) "c"
3) "a"
4) "d"

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