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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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dircmp(1)							   User Commands							 dircmp(1)

NAME
dircmp - directory comparison SYNOPSIS
dircmp [-ds] [-w n] dir1 dir2 DESCRIPTION
The dircmp command examines dir1 and dir2 and generates various tabulated information about the contents of the directories. Listings of files that are unique to each directory are generated for all the options. If no option is entered, a list is output indicating whether the file names common to both directories have the same contents. OPTIONS
The following options are supported: -d Compares the contents of files with the same name in both directories and output a list telling what must be changed in the two files to bring them into agreement. The list format is described in diff(1). -s Suppresses messages about identical files. -w n Changes the width of the output line to n characters. The default width is 72. OPERANDS
The following operands are supported: dir1 A path name of a directory to be compared. dir2 USAGE
See largefile(5) for the description of the behavior of dircmp when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes). ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of dircmp: LC_COLLATE, LC_CTYPE, LC_MES- SAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. (Differences in directory contents are not considered errors.) ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ SEE ALSO
cmp(1), diff(1), attributes(5), environ(5), largefile(5) SunOS 5.11 1 Feb 1995 dircmp(1)
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