I am having a very difficult time trying to think of a single practical use for STDIN redirection. cat < /etc/passwd is an example of STDIN redirection, but it is silly in the same way as a useless use of cat. I've used Linux for 15 years now and I can't think of a single time I've needed STDIN redirection. Does anyone have any practical examples of it?
What are some practical uses of STDIN redirection?
io redirection;stdin