Executing MySQL Commands from Shell Scripts
Automating SQL command execution through shell scripts simplifies data management tasks. One common use case is restoring data from an SQL file, requiring a connection to a remote server.
Issue:
Attempting to execute an SQL command via a shell script using the command:
mysql -h "server-name" -u root "password" "database-name" <p>results in an error.</p><p><strong>Resolution:</strong></p><p>The error likely arises from an incorrect way of specifying the password. To fix it, use the -p flag without any space between it and the password:</p><pre class="brush:php;toolbar:false">mysql -h "server-name" -u "root" "-pXXXXXXXX" "database-name" <p><strong>Additional Tips:</strong></p>
- Storing the username and password in ~/.my.cnf eliminates the need to include them in the command line.
- Using the -x flag in the shell script execution command allows you to monitor how each command is executed, aiding in troubleshooting.
Revised Shell Script Example:
perl fb_apps_frm_fb.pl perl fb_new_spider.pl ds_fbids.txt ds_fbids.sql mysql -h dbservername -u username "-pXXXXXXXX" dbname
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