[Bug-ddrescue] No possibility to write to stdout

[Michael Stapelberg]

Hi,

It would be great if GNU ddrescue could provide the possibility of writing to
stdout. This makes it possible to backup a hard disk drive to a compressed
image, like this:

    ddrescue /dev/sda - | gzip -9 > /mnt/usb-hdd/backup.img.gz

Also, it enables saving backups to a different computer via SSH etc.

Thanks!
Best regards,
Michael