Why does the shell snippet exec 5>file echo foo >&5 echo bar >&5
cause repeated dup()ing and close()ing of the file descriptor instead of a simple write() to the already open file descriptor, as pointed out in [1]? Looks like a simple optimization to avoid 2 of 3 syscalls (disclaimer: I have not looked at the bash source code at all). Regards, Ralf [1] http://lists.gnu.org/archive/html/bug-libtool/2005-05/msg00150.html _______________________________________________ Bug-bash mailing list Bug-bash@gnu.org http://lists.gnu.org/mailman/listinfo/bug-bash
