Hi Monks, I have just started using Perl at work to help out with tasks here and there so I am new to this. Recently, I created this script to grab a list of records from a database. It actually works! I'm pretty thrilled.
open (FILE, "userstab.txt") || die "Cannot open file.\n";
open (NEWFILE, ">results.txt") || die "Cannot find or open file for ed
+iting.\n";
while (<FILE>) {
@zapschool = split (/\t/);
if (m/zaps/i) {
print NEWFILE "$zapschool[4]\n";
}
}
close FILE;
close NEWFILE;
This gives me a list of all the entries in a column, but now I need to figure out how to use Perl to go through my new list, results.txt, and create a new list that holds the names and a count of how many times a partcular name appears on the list.
For example, my list contains college and university names. Many of them appear multiple times. I'd like to create a list where each unique record appears only once but with a frequency count of how many times it appears.
Can you offer some guidance on how to proceede? I'm not necessarily looking for finshed code, but more a point in the right direction so I can do it myself. Thank you.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
|
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.