asked on

Perl tar error

Hi - right now i know to use the below modules
use Archive::Zip;
use Archive::Zip qw( :ERROR_CODES :CONSTANTS);

to zip the file, but this requires installing this module in the server (cpan Archive::Zip) and which is not allowed in the server as of now.
So I want to use tar cvzf in my perl script and I tried the below code and got an error

use 5.010;
use strict;
use warnings;
my $compareDirectory="/TestData/FolderB";
my $ZipLocation="/TestData/FolderC/";
sub getCurrentDateTime(){
  my @locTime = localtime();
  my $currentDateTime = sprintf("%4d%02d%02d%02d%02d%02d",
      1900 + $locTime[5], $locTime[4] + 1, $locTime[3],
      $locTime[2], $locTime[1], $locTime[0]);
  return $currentDateTime;
}
my $currentDateTime = getCurrentDateTime(); 
my $name = "testfile1.txt";
my $zipName = $name."_".$currentDateTime.".tar.gz";
print "zipName: $zipName \n";
tar cvzf $ZipLocation/$zipName $compareDirectory/$name;

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Error:
Scalar found where operator expected at timetesting.pl line 22, near "$zipName $
compareDirectory"
(Missing operator before $compareDirectory?)
syntax error at timetesting.pl line 22, near "$zipName $compareDirectory"
Execution of timetesting.pl aborted due to compilation errors.
Press any key to continue . . .

FishMonger

The problem is this line:

tar cvzf $ZipLocation/$zipName $compareDirectory/$name;

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If you intended to execute that command, you need to wrap it in ` ` backticks, or the qx() operator, or the system() function.

my $cmd_putput = `tar cvzf $ZipLocation/$zipName $compareDirectory/$name`;

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my $cmd_putput = qx("tar cvzf $ZipLocation/$zipName $compareDirectory/$name");

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system("tar cvzf $ZipLocation/$zipName $compareDirectory/$name");

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FishMonger

Also, get rid of that getCurrentDateTime() sub and instead use the strftime function from the POSIX (core) module.

use POSIX qw(strftime);
my $current_date_time = strftime("%Y%m%d%H%M%S", localtime);

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FishMonger

BTW, I forgot to mention that you could use Archive::Tar, which is a core module, instead of shelling out to the system.

ASKER CERTIFIED SOLUTION

FishMonger

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shragi

ASKER

Hi FishMonger - The code did not work and did not create tar file and I got an error saying
Error:

tar: Removing leading '/' from member names

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#!/usr/bin/perl

use 5.010;
use strict;
use warnings;
use POSIX qw(strftime);

my $compare_directory = "/home/user1/TestData/FolderB";
my $zip_location      = "/home/user1/TestData/FolderC";
my $fname              = "testfile1.txt";
my $name              = "testfile1";
my $current_date_time = strftime("%Y%m%d%H%M%S", localtime);
my $zip_name          = "${name}_$current_date_time.tar.gz";

print $zip_name;

system("tar -cvzf $zip_location/$zip_name $compare_directory/$fname");

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tel2

> "...The code did not work and did not create tar file and I got an error saying
Error:"

Did it actually say "Error"? That should be a warning, and is just telling you that it's making the paths relative so you can restore it to anywhere, not just to the original root position, which is good news.

Are you sure it didn't work?
What files do you see in /home/user1/TestData/FolderC ?

shragi

ASKER

that's true its not an error and it worked, sorry i gave the wrong path.
Is there a way to avoid that warning.

Thanks,

SOLUTION

tel2

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