Solved

Perl code to write values to a file

Posted on 2009-07-06
4
183 Views
Last Modified: 2012-05-07
Hello

Could you help me with some code ? I have to do some stats to some data then print it back to a new file (to be created at the time)

what code would I use to create a file and print out the contents of variables to it ?
0
Comment
Question by:MichaelGlancy
  • 2
4 Comments
 
LVL 39

Accepted Solution

by:
Adam314 earned 500 total points
ID: 24789564

#The variables, and their values
my $v1=1;
my $v2=2;
 
open(my $fh, ">filename.txt") or die "filename.txt: $!\n";
print $fh "v1=$v1\n";
print $fh "v2=$v2\n";
close($fh);

Open in new window

0
 

Author Closing Comment

by:MichaelGlancy
ID: 31600378
thankyou
0
 
LVL 40

Expert Comment

by:mrjoltcola
ID: 24789588
Using your other question as a sample.
#!/usr/bin/perl
 
open(IN, "<in.txt") or die;
open(OUT, ">out.txt") or die;
my $s;
 
while($s = <IN>) {
   if($s =~ /(\d+),(\d+),(\d+),(\d+),(\d+),(\d+),(\d+)/) {
      my ($n1, $n2, $n3, $n4, $n5, $n6, $n7) = ($1, $2, $3, $4, $5, $6, $7);
      # Do some random calculations
      $n1 += 1;
      $n2 += 2;
      print OUT "$n1,$n2,$n3,$n4,$n5,$n6,$n7\n";
   }
}

Open in new window

0
 

Author Comment

by:MichaelGlancy
ID: 24789609
thank you    mrjoltcola
0

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

I have been pestered over the years to produce and distribute regular data extracts, and often the request have explicitly requested the data be emailed as an Excel attachement; specifically Excel, as it appears: CSV files confuse (no Red or Green h…
There are many situations when we need to display the data in sorted order. For example: Student details by name or by rank or by total marks etc. If you are working on data driven based projects then you will use sorting techniques very frequently.…
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…

791 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