macOS Cron job to mount encrypted sparse bundle

[Crash Davis]

I can run the following command in terminal to mount an encrypted sparsebundle where the bundle password is stored in the keychain.

hdiutil attach '/Volumes/Backup/Mac1.sparsebundle'

I would like to have that command run on a schedule, so I'm using CronniX to create a cron job with that command. But, when it runs at the scheduled time, nothing happens. When I check the cron daemon mail in terminal, it says the following:

hdiutil: attach failed - Authentication error

I'm assuming that it isn't able to read the password from keychain? I don't know. Hoping somebody can shed some light on things, or point me in the right direction.

Thanks

 

[willieva]

You might be able to use -stdinpass in the cronjob line. This will us an unencrypted passphrase, so it's not the most secure method.