Got error: 2002: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) when tryin

在linux环境下将mysql中某个表导出为sql脚本，执行命令:

mysqldump -uroot -p密码 liqun i_billmain --where="czsj>'2018-07-24 00:00:00'" > /home/mysql/main-20180724.sql

时报错:

mysqldump: Got error: 2002: Can't connect to local
 MySQL server through socket '/tmp/mysql.sock' (2)
 when trying to connect

解决：修改命令

mysqldump -h127.0.0.1 -uroot -p密码 liqun i_billmain
 --where="czsj>'2018-07-24 00:00:00'" > /home/mysql/main-20180724.sql

OK