mysql> select * from huanqiu.haha;
+----+------------+
| id | name       |
+----+------------+
|  1 | wangshibo  |
|  2 | wangshikui |
|  3 | wangjuan   |
|  4 | wangman    |
| 11 | wangshikui |
+----+------------+
5 rows in set (0.00 sec)
mysql> pager cat /dev/null;        //实际上等于后面执行的命令|cat /dev/null，这样显示结果就只是执行时间了
PAGER set to 'cat /dev/null'
mysql> select * from huanqiu.haha;
5 rows in set (0.00 sec)
mysql> nopager;                   //恢复之前的输出状态
PAGER set to stdout
mysql> select * from huanqiu.haha;
+----+------------+
| id | name       |
+----+------------+
|  1 | wangshibo  |
|  2 | wangshikui |
|  3 | wangjuan   |
|  4 | wangman    |
| 11 | wangshikui |
+----+------------+
5 rows in set (0.00 sec)

mysql> show processlist;
+------+-------+---------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
| Id   | User  | Host                | db     | Command     | Time | State                                                                 | Info             |
+------+-------+---------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
|    5 | root  | localhost           | huanpc | Query       |    0 | init                                                                  | show processlist |
| 1801 | slave | 192.168.1.102:37125 | NULL   | Binlog Dump | 9904 | Master has sent all binlog to slave; waiting for binlog to be updated | NULL             |
+------+-------+---------------------+--------+-------------+------+-----------------------------------------------------------------------+------------------+
2 rows in set (0.00 sec)mysql> pager grep Sleep |wc -l;
PAGER set to 'grep Sleep |wc -l'
mysql> show processlist;           //类似于show processlist结果再通过grep Sleep |wc -l显示；下面表示一共有2个连接，其中0个Sleep状态的连接。
0
2 rows in set (0.00 sec)
mysql> nopager;                    //恢复之前的输出状态

mysql> show slave status \G;              //其中的\G表示显示要换行显示
*************************** 1. row ***************************Slave_IO_State: Waiting for master to send eventMaster_Host: 192.168.1.101Master_User: slaveMaster_Port: 3306Connect_Retry: 60Master_Log_File: mysql-bin.000001Read_Master_Log_Pos: 5370489Relay_Log_File: mysql-relay-bin.000005Relay_Log_Pos: 2476520Relay_Master_Log_File: mysql-bin.000001Slave_IO_Running: YesSlave_SQL_Running: YesReplicate_Do_DB: huanqiu,huanpcReplicate_Ignore_DB: mysqlReplicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0Last_Error: Skip_Counter: 0Exec_Master_Log_Pos: 5370489Relay_Log_Space: 2476693Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0Master_SSL_Allowed: NoMaster_SSL_CA_File: Master_SSL_CA_Path: Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: NoLast_IO_Errno: 0Last_IO_Error: Last_SQL_Errno: 0Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 101Master_UUID: b667a58f-d6e0-11e6-8c0a-fa163e2d66acMaster_Info_File: /data/mysql/data/master.infoSQL_Delay: 0SQL_Remaining_Delay: NULLSlave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update itMaster_Retry_Count: 86400Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0
1 row in set (0.00 sec)ERROR:
No query specifiedmysql> pager cat | egrep -i 'system user|Exec_Master_Log_Pos|Seconds_Behind_Master|Read_Master_Log_Pos';
PAGER set to 'cat | egrep -i 'system user|Exec_Master_Log_Pos|Seconds_Behind_Master|Read_Master_Log_Pos''mysql> show slave status \G;Read_Master_Log_Pos: 5370489Exec_Master_Log_Pos: 5370489Seconds_Behind_Master: 0
1 row in set (0.00 sec)ERROR:
No query specifiedmysql> nopager;                 //恢复之前的显示状态
PAGER set to stdout