Solved

Daily Backup using Perl

Posted on 2009-07-10
5
163 Views
Last Modified: 2012-06-21
I need to make a Perl backup script that creates a new dated folder every day, copies data from a source folder to the new dated folder until it reaches 28 days, then deletes the oldest folder and continues. This will have to function in Server 2k3. Below is what I have so far - I started getting confused when generating and naming the folders failed. Any Perl Genius want to help out?
#! C:\Perl\bin
 

use Date::Calc qw(Day_of_Week Week_Number Day_of_Week_to_Text);

use Time::localtime;
 

$tm = localtime;

($day, $month, $year) = ($tm->mday, $tm->mon, $tm->year);
 

###########################

# Set date/time/day of week
 

$year = $year+1900;

$month = $month+1;

$wday = Day_of_Week($year, $month, $day);

$wnum = Week_Number($year, $month, $day);

print "date set\n";
 

###########################

# Create new folders by date
 

use POSIX qw[strftime];
 

$DestDir='e:\budata';

$SourceDir='d:\source';
 

$DateDir=strftime("%a_%b_%d_%Y",localtime());
 

$DestDirFinal="$DestDir/$DateDir";
 

if(-e $DestDirFinal) {

      system("rm -fr $DestDirFinal");

}
 

mkdir($DestDirFinal) or die "Could not mkdir: $!\n";

system("cp -R $SourceDir $DestDirFinal");

Open in new window

0
Comment
Question by:ICT-KevinM
  • 2
  • 2
5 Comments
 
LVL 39

Expert Comment

by:Adam314
Comment Utility
Instead of using system, you should use perl commands, as it'll be easier to tell if it was successful.

Instead of "rm -fr" (a unix command - I thought you need win2k3?) to remove directories, you should use the rmtree from the File::Path module.

Instead of "cp -R" (again unix command?) to copy, use File::Copy::Recursive.

using these modules will also make your script more portable, in case it is needed on both unix and windows systems.
0
 

Author Comment

by:ICT-KevinM
Comment Utility
Thanks Adam - I guess I having been reading so much information on Perl, I have begun to blur the lines between perl and unix commands. Is it possible for me to name folders based on local date using a Perl command? I have searched high and low.
0
 
LVL 39

Accepted Solution

by:
Adam314 earned 250 total points
Comment Utility
Yes, you can use the $DestDirFinal like you have, which uses the strftime function to generate the folder name from the date.  Is this not what you wanted?

0
 
LVL 48

Assisted Solution

by:Tintin
Tintin earned 250 total points
Comment Utility
You are best not to mix backslashes and forward slashes.  Much easier to stick with forward slashes so you don't need to make differences between Windows and Unix/Linux systems.

change

$DestDir='e:\budata';
$SourceDir='d:\source';


to

$DestDir="E:/budata";
$SourceDir="D:/source";
0
 

Author Closing Comment

by:ICT-KevinM
Comment Utility
Thanks, that's great.
0

Featured Post

How to improve team productivity

Quip adds documents, spreadsheets, and tasklists to your Slack experience
- Elevate ideas to Quip docs
- Share Quip docs in Slack
- Get notified of changes to your docs
- Available on iOS/Android/Desktop/Web
- Online/Offline

Join & Write a Comment

Suggested Solutions

I've just discovered very important differences between Windows an Unix formats in Perl,at least 5.xx.. MOST IMPORTANT: Use Unix file format while saving Your script. otherwise it will have ^M s or smth likely weird in the EOL, Then DO NOT use m…
On Microsoft Windows, if  when you click or type the name of a .pl file, you get an error "is not recognized as an internal or external command, operable program or batch file", then this means you do not have the .pl file extension associated with …
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
In this seventh video of the Xpdf series, we discuss and demonstrate the PDFfonts utility, which lists all the fonts used in a PDF file. It does this via a command line interface, making it suitable for use in programs, scripts, batch files — any pl…

763 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now