Tee is a unix command that takes the standard out output of a Unix command and writes it to both your terminal and a file. Until recently I never knew there was a MySQL client command that performed the same function. Today I will show you an example of how to use it.
First login to the MySQL CLI (command line interface)
$ mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 24839
Once you are in you will have a command prompt. From there simply type tee and the file path and name you want to save to.
mysql> tee /var/tmp/mysql_tee.out
Logging to file '/var/tmp/mysql_tee.out'
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+---------------------------+
| Tables_in_mysql |
+---------------------------+
| columns_priv |
| db |
| event |
| func |
| general_log |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| host |
| ndb_binlog_index |
| plugin |
| proc |
| procs_priv |
| servers |
| slow_log |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+---------------------------+
23 rows in set (0.00 sec)
Now just check your file and make sure your commands were logged.
$ ls -la /var/tmp/mysql_tee.out
-rw-r--r-- 1 ubuntu ubuntu 1030 2011-12-22 01:43 /var/tmp/mysql_tee.out
Benjamin is a Systems Architect working in the financial services industry focused on platforms that require Continuous Availability. He has been working with Linux and Unix for over 10 years now and has recently published his first book; Red Hat Enterprise Linux Troubleshooting Guide.
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