I have "InnoDB: Operating system error number 13 in a file operation" problem.
At google, I found "mysql_install_db --user=mysql" would be solution, but I got error message.
root@:/opt/lampp/var>mysql_install_db --user=mysq
Didn't find /usr/libexec/mysqld
You should do a 'make install' before executing this script
How can I solve this error?