The magento store throwing the following error.
Service Temporarily Unavailable
No changes have been made but still throwing the above error message. To resolve the above error message make sure that no single file with the name maintenance.flag present under the magento shop installation.
Login in to the shell and run the following command to resolve the issue.
find /home/username/public_heml/ -name “.maintenance.flag” -exec cp {} “{}__back” \;
Replace the path /home/username/public_heml as per your magento shop document root path.