Hello, On Dec 4, 8:18 pm, DennisW <dennistwilliam...@gmail.com> wrote: > It works for me. Does it not for you? If you're asking why not do it, > then the answer is "why call an external program unnecessarily?". > > Sorry, by the way, I missed what you were doing with the file > descriptor on my first read. What is it that you're trying to > accomplish? Are you doing this only to number the lines or is either > seq or the while loop a stand-in for something else?
the seq was only an example for demonstration. here is another example that shows what I mean: $ exec 3> >(while read line; do echo "tag: $line"; done) $ seq 4 >&3 tag: 1 tag: 2 tag: 3 tag: 4 $ exec 3> >(while read line; do echo "$(date): $line"; done) $ seq 4 >&3 $ Sat Dec 5 10:11:25 CET 2009: 1 Sat Dec 5 10:11:25 CET 2009: 2 Sat Dec 5 10:11:25 CET 2009: 3 Sat Dec 5 10:11:25 CET 2009: 4 while in the first example the prompt returns after the command completes, the prompt returns immediately in the second example. thanks for your attention, Peter
