Perl Guru Forums: Perl Programming Help: Frequently Asked Questions: How do I print to more than one file at once?

CGI/Perl Guide | Learning Center | Forums | Advertise | Login

Site Search: in


	MAIN INDEX	SEARCH POSTS	WHO'S ONLINE	LOG IN

Home: Perl Programming Help: Frequently Asked Questions:
How do I print to more than one file at once?

Jasmine
Administrator

Jan 26, 2001, 10:30 AM

Post #1 of 1 (1251 views)

How do I print to more than one file at once?	Can't Post

(From the Perl FAQ)

How do I print to more than one file at once?

If you only have to do this once, you can do this:

Code

    for $fh (FH1, FH2, FH3) { print $fh "whatever\n" }

To connect up to one filehandle to several output filehandles, it's easiest to use the tee(1) program if you have it, and let it take care of the multiplexing:

Code

    open (FH, "| tee file1 file2 file3");

Or even:

Code

    # make STDOUT go to three files, plus original STDOUT 
    open (STDOUT, "| tee file1 file2 file3") or die "Teeing off: $!\n"; 
    print "whatever\n"                       or die "Writing: $!\n"; 
    close(STDOUT)                            or die "Closing: $!\n";

Otherwise you'll have to write your own multiplexing print function -- or your own tee program -- or use Tom Christiansen's, at http://www.perl.com/CPAN/authors/id/TOMC/scripts/tct.gz, which is written in Perl and offers much greater functionality than the stock version.

Search for (options)

Web Applications & Managed Hosting Powered by Gossamer Threads
Visit our Mailing List Archives