Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

File processing on perl

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting File processing on perl
# 1  
Old 09-01-2006
File processing on perl
Hey everyone ...

I wanted to process the contents of a file, as in modify its contents. whats the best way to do it on perl? In more detail I hav to go through the contents of the file, match patterns n then modify the contents of the same file depending on the matching results. Any help is welcome.

Thanks n regards,
Garric
# 2  
Old 09-01-2006
Hi,

This may help you.

Code:
1. open the file with fopen.
2. Read the contents line by line.
3. match the string with your pattern and repace accordingly.
4. Write line in another file.
5. remove new file with previous one.

# 3  
Old 09-02-2006
MySQL Code
testfile.txt :

About Apple
Apple is a fruit
I like Apple Juice


Code

open(INFILE,"./testfile.txt")||die ("Cannot open testfile.txt");
open(OUTFILE,">./orange.txt")||die ("Cannot open orange.txt");
while($str=<INFILE>)
{
$str =~ s/Apple/Orange/g;
print OUTFILE $str;
}
close(INFILE);
close(OUTFILE);

Orange.txt


About Orange
Orange is a fruit
I like Orange Juice
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Programming

awk processing / Shell Script Processing to remove columns text file

Hello, I extracted a list of files in a directory with the command ls . However this is not my computer, so the ls functionality has been revamped so that it gives the filesizes in front like this : This is the output of ls command : I stored the output in a file filelist 1.1M... (5 Replies)
Discussion started by: ajayram
5 Replies

2. Shell Programming and Scripting

PARALLEL PROCESSING IN PERL

HI All, I have scenerio where I need to call sub modules through for loop for (i=0; i<30 ;i++) { .. .. .. subroutine 1; subroutine 2; } I want this to be run in parallel process1 { ... ... subroutine 1; subroutine 2; (0 Replies)
Discussion started by: gvk25
0 Replies

3. Shell Programming and Scripting

perl problem in processing excel file

Dear all, I got a perl script to write some data into an excel file using Spreadsheet::ParseExcel::SaveParser. After that I find all formulas in the excel file are gone. Does any body encounter this problem or have any work around? (2 Replies)
Discussion started by: eldonlck
2 Replies

4. Programming

help me with perl script xml processing

Hi everyone, I have Xml files in a folder, I need to extract some attribute values form xml files and store in a hash. My xml file look like this. <?xml version="1.0" encoding="UTF-8"?> <Servicelist xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"... (0 Replies)
Discussion started by: pavani reddy
0 Replies

5. UNIX for Advanced & Expert Users

perl text file processing using hash

Hi Experts, I have this requirement to process large files (200MB+).Format of files is like: recordstart val1 1 val2 2 val3 4 recordstart val1 5 val2 6 val3 1 val4 1 recordstart val1 ... (4 Replies)
Discussion started by: mtomar
4 Replies

6. Shell Programming and Scripting

Perl file processing

I have an input array like : "SVR1" GRP="EVT_BOX06B" SRID=100 MIN=2 "SVR1" GRP="EVT_BOX06B" SRID=200 MIN=1 "SVR2" GRP="ADM_BOX06B" SRID=100 MIN=1 "SVR1" GRP="EVT_BOX88B" SRID=100 MIN=2 "SVR1" GRP="EVT_BOX88B" SRID=200 MIN=1... (4 Replies)
Discussion started by: deo_kaustubh
4 Replies

7. Shell Programming and Scripting

Processing a file in perl

Qspace ABC Queue doCol: true Queue order: fifo Queue setCol: red Queue order: fifo Qspace XYZ Queue getCol: true Queue order: fifo I need to append every line in this file with Qspace & Queue, so that final o/p shall look like this, Qspace: ABC Queue: doCol Qspace: ABC Queue: doCol... (2 Replies)
Discussion started by: deo_kaustubh
2 Replies

8. Shell Programming and Scripting

Simple Script needed for Processing CSV file perl

I am new to perl, and need a script to pull a CSV file, strip out 2 leading columns, and 2 ending columns, and resave the file in a new location. The file is basic and has less than 10,000 records. Secondly, can I schedule perl scripts to run daily? Can someone provide the basic script to... (1 Reply)
Discussion started by: cobbjob
1 Replies

9. Shell Programming and Scripting

awk, perl Script for processing a single line text file

I need a script to process a huge single line text file: The sample of the text is: "forward_inline_item": "Inline", "options_region_Australia": "Australia", "server_event_err_msg": "There was an error attempting to save", "Token": "Yes", "family": "Family","pwd_login_tab": "Enter Your... (1 Reply)
Discussion started by: hmsadiq
1 Replies

10. Shell Programming and Scripting

perl script for file processing

Aim: To scan a file and ignore all characters that has an ASCII value from 0 to 31 and 127 to 255 and accept only those characters having an ASCII between 32 and 126. Script: #!/usr/local/bin/perl $filename = "$ARGV"; if (-e $filename) { open(OUT, "${filename}") || die "can't... (10 Replies)
Discussion started by: SEEHTAS
10 Replies
Login or Register to Ask a Question