I have some scripts that do usual stuff like backing up MySql database, gz, tar some files and put them on FTP or sync with some other backup/mirror system. Some scripts are running quite frequently (like twice/thrice per hour). I am sending email with attached log output from commands after completion of job. It is quite a lot of email to keep track of.
I want to send email only when script fails to do something, that is when some command in script fails. How can I accomplish this?