qvm-backup requires an option to specify a password through stdin / cmdline

[Rudd-O]

I just spent the better part of two hours trying to automate qvm-backup with no success at all.

Please add a command line option --stdin that lets qvm-backup override getpass.getpass(...) and also skip the confirmation [y/N] such that the password can be specified through standard input.

It should not be difficult -- you just need a code block that skips the confirmation if --stdin is specified, and another code block that skips the getpass.getpass() call if the aforementioned parameter has been specified.

All of this can be implemented in qvm-backup very easily.

Perhaps, even, there could be a --file option, which could have - as a parameter, meaning /dev/stdin. That way, it need not be the case that --stdin exists, or hardcodes the password input to standard input. Maybe the input can be a file in /dev/shm. Certainly, this can be used to do integration tests of qvm-backup, especially without having to include pty cobwebs in the code.

Thanks.

[marmarek]

There is qvm-backup --passphrase-file=- for it.

[marmarek]

There is qvm-backup --passphrase-file=- for it.