I wonder if there is a way to create a 'virtual file' from a bash output.
Let's say I want to email the output of mysqldump as an attachment to an external email address.
I can use mutt to do so.
The mutt option I need to use is '-a '.
I know I could use a temporary file (mysqldump mysqldumpoptions > /tmp/tempfile && mutt -a /tmp/tempfile firstname.lastname@example.org ...), but I would rather redirect the mysqldump output directly to mutt instead.
Mutt's -a option only accepts a file and not a stream, but maybe there is a way to pass it some kind of virtual file descriptor or something along those lines.
(something like mutt -a $(mysqldump mysqldumpoptions) email@example.com)
Is it possible? If not, why?
This is maybe a silly example and there surely are easier ways to do this, but I hope it explains my question about creating a virtual file from the output of another command.