OS: CentOS 6.3

DB:5.5.14

mysql> show processlist;
+----+------+-----------+--------------------+---------+------+-------+------------------+
| Id | User | Host      | db                 | Command | Time | State | Info             |
+----+------+-----------+--------------------+---------+------+-------+------------------+
| 37 | root | localhost | information_schema | Query   |    0 | NULL  | show processlist |
| 38 | root | localhost | NULL               | Sleep   |  559 |       | NULL             |
+----+------+-----------+--------------------+---------+------+-------+------------------+

mysql> kill 40;
1 row in set (0.00 sec)

mysql> use information_schema

mysql> select id from processlist;
+----+
| id |
+----+
| 40 |
+----+
1 row in set (0.00 sec)

mysql> select concat('kill ',id,';') from information_schema.processlist where user='root' into outfile '/export/yoon.txt';
Query OK, 1 row affected (0.09 sec)

[root@db01 export]# more yoon.txt 
kill 40;

批量删除会话：
mysql> source /export/yoon.txt