Backup the database

# mysqldump --opt -u username -p password -r mydb.dump mydb


Please note: Redirection does not capture UTF characters properly, while the -r option does (--result-file). I found this  [ ... ]

using lockfiles in shell scripts (BASH) If you want to be 100% sure that only 1 process accesses a resource at the same time, you can use the command "lockfile". Lockfile creates a semaphore file [ ... ]