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Re: Lost STDOUT?

by welchavw (Pilgrim)
on Nov 04, 2004 at 21:04 UTC ( #405309=note: print w/replies, xml ) Need Help??


in reply to Lost STDOUT?

I'll defer to this link. I can't assert its correctness, but the source is pristine.

http://groups.google.com/groups?q=reopen+STDOUT&hl=en&lr=&selm=m14skhbfak.fsf%40halfdome.holdit.com&rnum=6

Addition

As an aside, if you were not doing CGI and could count on your code being launched from a commandline shell, you *might* be able to get away with something like this.

#!/usr/bin/perl -w use strict; use AtExit; $_ = atexit(sub { open STDOUT, ">/dev/tty" or die; print "bar\n"; }); close STDOUT; exit 0;

But that's not a great approach. Caching the file descriptor is a better approach, but as prior poster noted, this probably isn't the problem anyway ... its just slow at work today and I thought I'd dummy some code up and post.

,welchavw

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[jdporter]: one prog I have has a UI which allows to input a bit mask
[jdporter]: currently it expects the bitmask to be in the form of a hex number, e.g. 0x0101
[jdporter]: but I'd like to let the user specify it as individual bits, i.e. 0b0000000100000001
[jdporter]: there is no bit/binary equivalent of hex, right?
[jdporter]: I guess that the most direct way of doing it is with some magical incantation involving unpack or whatever
[jdporter]: let me google that for me ;-)
[jdporter]: hex points explicitly to oct, which does the job. :-D

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