MySQL: tee saving your output to a file

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

About Benjamin

Benjamin is a Infrastructure and Software Engineer. On this blog he writes about Linux, Docker, Programming as well as other Systems topics.

Learn more about Linux

If you liked this article, check out Benjamin's book: Red Hat Enterprise Linux Troubleshooting Guide. Where you can learn a lot more about troubleshooting Linux systems. This book is filled with tips and techniques he has learned over years of managing mission critical systems.

Related