Showing posts with label perl. Show all posts
Showing posts with label perl. Show all posts

Thursday, 9 March 2017

Perl Script to get content difference of a file


This Perl script will help you to get the content difference of a file available in two directories.

Usage: diffmany.pl filename dir1 dir2

Working: Script will pick the filename from argument and start comparing its content and print the
difference. Here assumption is the same file is available in two directories.
But we can alter this script to take two file name and one directory or based on our need.



View or Download : diffmany.pl




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Tuesday, 21 February 2017

PDF Split & Merge with Perl


Sharing two utility scripts (Perl), which can be used for extracting only few pages from a PDF file and also for combining different pdf files into a single pdf files. There might be lot of situation where in, we might require only few pages from a big PDF files. So instead of storing / carrying such a big PDF files, we could extract the page or pages which we require from the original big PDF files. Also we could combine different pdf files into a single pdf file using the second script. As an example, if we have extracted pages 10-15 and pages 100-120 from a big pdf file using the pdf_extract.pl and
we can combine these two pdf files (i.e. pdf which contains pages 10-15 and pdf which contains
pages 100-120) into a single pdf file using pdf_merge.pl


NOTE : These two perl scripts uses a perl module called PDF::API2. If this is not present on your system as part of the perl installation, you can download these modules from www.cpan.org and install. Please see the installation section for more details.


These two scripts can be used on windows, unix or linux. Currently tested on Windows with active perl 5.8.8, but it should work on unix and linux as well. For the pdf_extract.pl script to work on unix and linux, please change the variable called "path_separator" to "/" instead of "\\". This variable can be seen at the starting of the script. pdf_merge.pl can be used both on windows and unix/linux without any modification


Usage:

1) pdf_extract.pl

     perl pdf_extract.pl -i <input pdf file> -p <page or page range which needs to be extracted>

        where
        -i : Please give the full path to the input PDF file
        -p : Page Number or Page range which needs to be extracted from the input PDF

        example : To extract pages 3 to 5, execute

           perl pdf_extract.pl -i /tmp/abc.pdf -p 3-5

        example : To extract only page 3, execute

        perl pdf_extract.pl -i /tmp/abc.pdf -p 3


Executing with -h option will display the usage onto the screen

Example : perl ./pdf_extract.pl -h


2) pdf_merge.pl


perl pdf_merge.pl <output pdf file with full path> <input pdf file 1> <input pdf file 2> etc

Execute the script with all the pdf file which needs to be merged.
Script will merge in the same order which is given in the input

i.e. If you execute like pdf_merge.pl /tmp/out.pdf /tmp/abc.pdf /tmp/xyz.pdf

then pages from xyz.pdf will be after pages from abc.pdf

Executing with -h option will display the usage onto the screen

Example : ./pdf_merge.pl -h


CodeBase:

README File:
pdf_extract.pl
pdf_merge.pl







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Monday, 21 November 2016

Reading DSParam - datastage parameter file



I am sharing a utility which can help you to read DSParam file which holds all the environmental datastage parameters.

Utility to view contents of DSParams file. Useful when trying to see what all the customer has set at the project level.



Usage:
$ cat DSParams | ./DSParamReader.pl | more
or
$ cat DSParams | ./DSParamReader.pl > outputfile


Instructions:
1. copy script text below to a file (DSParamReader.pl) on a UNIX system
2. Set execute permissions on this file. chmod 777 envvar.pl
3. Usually perl is in /usr/bin/perl but you might have to adjust this path if neccessary. (hint "which perl" should tell you which one to use)
4. cat the DSParams file from the project you are concerned with and redirect the output to this script. You may have to put the Fully Qualified Path for this file.
5. capture the output to screen or file. File may be useful to have the customer send the info to you in email.








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