我没有找到导出的文件到/ tmp文件夹中。哪里有MYSQL导出那个文件？
mysql> SELECT oid,t FROM mytable INTO OUTFILE '/tmp/bbb.txt' CHARACTER SET latin1 FIELDS TERMINATED BY '\t' LINES TERMINATED BY '\r\n';
ERROR 1086 (HY000): File '/tmp/bbb.txt' already exists
mysql> \q
Bye
usr@locahost:/tmp$ ls -l /tmp
total 210308
-rw------- 1 jetty jetty 0 Feb 27 2014 31020.jsvc_up
-rw------- 1 root root 2210 Dec 13 2013 apticron.hFScRvN3T6
drwxr-xr-x 2 root root 4096 May 25 2014 graphs
srwxr-xr-x 1 root root 0 Aug 6 2014 haproxy.socket
drwx------ 2 jetty jetty 4096 Feb 27 2014 hsperfdata_jetty
drwxr-xr-x 2 root root 4096 Jun 16 04:45 hsperfdata_root
drwx------ 2 usr users 4096 Jul 15 03:36 mc-usr
-rw-r--r-- 1 root root 64 Jul 5 15:18 puppet_failures
-rw-r--r-- 1 usr users 64 Jul 15 03:29 puppet_failures00
usr@locahost:/tmp$