2015-05-22



Banahan's and Rutter's book ``UNIX'' reminded me,  that  you  can
use other file descriptors for input redirection as well. This is
so uncommon in practice, that one likely ignores and forgets  it.
I wanted not only know it but try it out to better understand and
remember it. This is a sample session for demonstration:

     $ cat printit
     #!/bin/sh
     echo from stdin
     cat
     echo
     echo from fd3
     cat <&3
     echo
     echo end

     $ chmod +x printit

     $ echo foo >foo

     $ echo bar >bar

     $ ./printit <foo 3<bar
     from stdin
     foo

     from fd3
     bar

     end




http://marmaro.de/lue/        markus schnalke <meillo@marmaro.de>