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Full Discussion: broken pipe?
Top Forums UNIX for Dummies Questions & Answers broken pipe? Post 21138 by gusla on Sunday 12th of May 2002 12:36:35 AM
Old 05-12-2002
Question i wanted to pipe to perl!

thks Freelive.

my initial purpose is wanted to pipe the files to a perl program.

see, say my perl program is getfile.pl (taking file names as argumemnts)
Code:
# getfile.pl
#!/usr/bin/perl -w
 while ($ARGV = shift)
 {
        print "\nprocessing $ARGV...";
        if (-d $ARGV)
        {
           print "\n$ARGV is a DIR\n";
         }
 }

if i use:
> getfile.pl f1 f2 dir1 dir2
to execute the perl file, it's working.

However, if i use:
> ls | getfile.pl OR >find * | getfile.pl
it's not working. It wouldn't recoglise the input argument (@ARGV is empty)

also
>getfile.pl < f1 f2 dir1 dir2

it only recognise f2, dir1, dir2. The first argument f1 is missing. (ie. @ARGV only contains f2, dir1 and dir2)


WHY?

appreciate as usual

Gusla
Smilie

added code tags for readability --oombera

Last edited by oombera; 02-18-2004 at 12:41 PM..
 

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ExtUtils::Command::MM(3)				User Contributed Perl Documentation				  ExtUtils::Command::MM(3)

NAME
ExtUtils::Command::MM - Commands for the MM's to use in Makefiles SYNOPSIS
perl "-MExtUtils::Command::MM" -e "function" "--" arguments... DESCRIPTION
FOR INTERNAL USE ONLY! The interface is not stable. ExtUtils::Command::MM encapsulates code which would otherwise have to be done with large "one" liners. Any $(FOO) used in the examples are make variables, not Perl. test_harness test_harness($verbose, @test_libs); Runs the tests on @ARGV via Test::Harness passing through the $verbose flag. Any @test_libs will be unshifted onto the test's @INC. @test_libs are run in alphabetical order. pod2man pod2man( '--option=value', $podfile1 => $manpage1, $podfile2 => $manpage2, ... ); # or args on @ARGV pod2man() is a function performing most of the duties of the pod2man program. Its arguments are exactly the same as pod2man as of 5.8.0 with the addition of: --perm_rw octal permission to set the resulting manpage to And the removal of: --verbose/-v --help/-h If no arguments are given to pod2man it will read from @ARGV. If Pod::Man is unavailable, this function will warn and return undef. warn_if_old_packlist perl "-MExtUtils::Command::MM" -e warn_if_old_packlist <somefile> Displays a warning that an old packlist file was found. Reads the filename from @ARGV. perllocal_install perl "-MExtUtils::Command::MM" -e perllocal_install <type> <module name> <key> <value> ... # VMS only, key|value pairs come on STDIN perl "-MExtUtils::Command::MM" -e perllocal_install <type> <module name> < <key>|<value> ... Prints a fragment of POD suitable for appending to perllocal.pod. Arguments are read from @ARGV. 'type' is the type of what you're installing. Usually 'Module'. 'module name' is simply the name of your module. (Foo::Bar) Key/value pairs are extra information about the module. Fields include: installed into which directory your module was out into LINKTYPE dynamic or static linking VERSION module version number EXE_FILES any executables installed in a space seperated list uninstall perl "-MExtUtils::Command::MM" -e uninstall <packlist> A wrapper around ExtUtils::Install::uninstall(). Warns that uninstallation is deprecated and doesn't actually perform the uninstallation. perl v5.16.3 2013-06-14 ExtUtils::Command::MM(3)
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