1.ping：测试服务器是否存@H_502_3@

127.0.0.1:6379> ping
PONG@H_502_3@

ping pong类似于打乒乓球，pong说明服务器有相应。@H_502_3@

然后我们把redis关闭掉@H_502_3@

127.0.0.1:6379> ping
Could not connect to Redis at 127.0.0.1:6379: Connection refused@H_502_3@

可以看到已经连接不上了@H_502_3@

然后再启动redis@H_502_3@

127.0.0.1:6379> ping
PONG@H_502_3@

2.echo content 再命令行输出content@H_502_3@

127.0.0.1:6379> echo 'test echo'
"test echo"@H_502_3@

3.select dbindex：选择数据库。Redis数据库的编号是0-15，我们可以选择任意一个数据库来进行数据的存取。当选择16时会报错。@H_502_3@

127.0.0.1:6379> select 11
OK
127.0.0.1:6379> select 16
(error) ERR invalid DB index@H_502_3@

4.quit/exit：退出和redis的链接@H_502_3@

5.dbsize：返回当前数据库中key的数目@H_502_3@

127.0.0.1:6379> select 0
OK
127.0.0.1:6379> keys *
1) "key2"
2) "key4"
3) "key1"
4) "key3"
5) "zsetkey1"
127.0.0.1:6379> dbsize
(integer) 5
127.0.0.1:6379> select 1
OK
127.0.0.1:6379> keys *
(empty list or set)
127.0.0.1:6379> dbsize
(integer) 0@H_502_3@

6.info：获取服务器的信息和统计@H_502_3@

7.config get key：获取配置文件中的信息@H_502_3@

127.0.0.1:6379> config get dir
1) "dir"
2) "/usr/local/redis-2.8.1/src"
127.0.0.1:6379> config get timeout
1) "timeout"
2) "0"@H_502_3@

如果用config get *可以将所有的配置信息取出@H_502_3@

8.flushdb：删除当前数据库中的所有key@H_502_3@

127.0.0.1:6379[1]> dbsize
(integer) 1
127.0.0.1:6379[1]> keys *
1) "listkey1"
127.0.0.1:6379[1]> flushdb
OK
127.0.0.1:6379[1]> keys *
(empty list or set)@H_502_3@

9.flushall：删除所有数据库的所有key@H_502_3@

127.0.0.1:6379[1]> select 0 OK 127.0.0.1:6379> dbsize (integer) 1 127.0.0.1:6379> select 1 OK 127.0.0.1:6379[1]> dbsize (integer) 2 127.0.0.1:6379[1]> flushall OK 127.0.0.1:6379[1]> dbsize (integer) 0 127.0.0.1:6379[1]> select 0 OK 127.0.0.1:6379> dbsize (integer) 0 @H_502_3@