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04.30.2008 at 09:07AM PDT, ID: 23365864

	[x] Attachment Details

[x]

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7.4

Perl script to merge files

Zones: Perl Programming Language, Scripting Languages

I need a perl script that will merge 2 or more flat text files. So for instance, if I have two files:

File1 content:
john doe 12/25/68 M

File2 content:
jane smith 03/23/78 F

...then after the merge, the output file should contain:
john doe 12/25/68 M
jane smith 03/23/78 F

...and so on.
Thanks in advance.

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Question Stats

Zone: Programming

Question Asked By: isaacr25

Solution Provided By: Morcalavin

Participating Experts: 5

Solution Grade: A

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04.30.2008 at 09:32AM PDT, ID: 21472282

Morcalavin:

you could try something like below. This way you could do:
script.pl file1.txt file2.txt file3.txt etc > newfile.txt

                       
             CONCAT: foreach(@ARGV)
{
	next CONCAT unless -f $_;
	open FILE, $_ or next CONCAT;
	print while(<FILE>);
	close FILE;
}

Open in New Window

04.30.2008 at 10:10AM PDT, ID: 21472631

Rank: Genius

ozo:

perl -pe1 File1 File2 > Merge

Assisted Solution

04.30.2008 at 11:26AM PDT, ID: 21473326

SmartIntel:

You have read the content from input files and append on the output file

@filenames=(file.txt,file2.txt...);
open(OUT,">>outputfilename.txt");
foreach $filename (@filenames)
{
open(FILE,"$filename") or die "Cannot open $filename";
$lines=<FILE>;
print OUT "$lines";
close FILE
}

Assisted Solution

05.03.2008 at 07:44AM PDT, ID: 21492517

marchent:

perl -e 'system("cat file1.txt file2.txt > merg.txt");'

Assisted Solution

05.04.2008 at 10:32PM PDT, ID: 21498272

Rank: Genius

Adam314:

There is no need for perl... you can use cat on unix or type on windows. The last example especially makes this clear - although it is platform specific...

05.04.2008 at 10:55PM PDT, ID: 21498328

Rank: Genius

ozo:

perl -pe1 File1 File2 > Merge
works from the shell in either unix or windows.
within a Perl program, you can do

#!/usr/bin/perl
@ARGV=qw(file.txt file2.txt);
open(STDOUT,">outputfilename.txt");
print while <>;

Assisted Solution

05.15.2008 at 11:38AM PDT, ID: 21576780

isaacr25:

Ok,
You guys have given me many choices... I'm a bit confused. Let's say that I want something non-perl (regardless of the title of my post). What code can I include in a .bat file? Thanks guys.

05.15.2008 at 11:42AM PDT, ID: 21576806

Morcalavin:

If it's windows, use type:
type file1.txt file2.txt > file3.txt

If it's unix, use cat:
cat file1.txt file2.txt > file3.txt

Accepted Solution

05.15.2008 at 11:44AM PDT, ID: 21576817

isaacr25:

For windows, This is all that needs to go in the .bat file?

type file1.txt file2.txt > file3.txt

05.15.2008 at 11:48AM PDT, ID: 21576848

Morcalavin:

Yep. Create some dummy files and try it.

05.15.2008 at 11:56AM PDT, ID: 21576901

isaacr25:

I just tried this on a Windows 2003 server and the merge file was not created:

type D:\Inetpub\ftproot\api\test\file1.csv D:\Inetpub\ftproot\api\test\file2.csv > D:\Inetpub\ftproot\api\test\file3.csv

Will this work with .csv files?

05.15.2008 at 12:01PM PDT, ID: 21576933

Morcalavin:

It should work fine. I just ran the following on Server 2003 and got a file:

type "C:\Documents and Settings\so\one.csv" "C:\Documents and Settings\so\two.csv" > "C:\Documents and Settings\so\three.csv"

05.19.2008 at 08:34AM PDT, ID: 21598688

Rank: Genius

Adam314:

The user running the script will need write permission to D:\Inetpub\ftproot\api\test and read permission for D:\Inetpub\ftproot\api\test\file1.csv and D:\Inetpub\ftproot\api\test\file2.csv.

Also, if any of the file names contain a space (none do in this example), the filename will need to be enclosed in double-quotes.

20080236-EE-VQP-29 / EE_QW_2_20070628