PERL split function

 
Thread Tools Search this Thread
Homework and Emergencies Homework & Coursework Questions PERL split function
# 1  
Old 02-21-2010
PERL split function

Hi... I have a question regarding the split function in PERL.

I have a very huge csv file (more than 80 million records). I need to extract a particular position(eg : 50th position) of each line from the csv file. I tried using split function. But I realized split takes a very long time.
Also it splits the entire line and puts in a array when I need just the 50th position field.

Is there any option to extract the field at a particular position in perl.
Plese help me out with this.
# 2  
Old 02-21-2010
Do not post classroom or homework problems in the main forums. Homework and coursework questions can only be posted in this forum under special homework rules.

Please review the rules, which you agreed to when you registered, if you have not already done so.

More-than-likely, posting homework in the main forums has resulting in a forum infraction. If you did not post homework, please explain the company you work for and the nature of the problem you are working on.

If you did post homework in the main forums, please review the guidelines for posting homework and repost.

Thank You.

The UNIX and Linux Forums.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

[Solved] Perl Question - split function with csv file

Hi all, I have a csv file that appears as follows: ,2013/03/26,2012/12/26,4,1,"2017/09/26,5.75%","2017/09/26,1,2018/09/26,1,2019/09/26,1,2020/09/26,1,2021/09/26,1",,,2012/12/26,now when i use the split function like this: my @f = split/,/; the split function will split the data that is... (2 Replies)
Discussion started by: WongSifu
2 Replies

2. Shell Programming and Scripting

Perl split function

my @d =split('\|', $_); west|ACH|3|Y|LuV|N||N|| Qt|UWST|57|Y|LSV|Y|Bng|N|KT| It Returns d as 8 for First Line, and 9 as for Second Line . I want to Process Both the Files, How to Handle It. (3 Replies)
Discussion started by: vishwakar
3 Replies

3. UNIX for Advanced & Expert Users

regular expression for split function in perl

Hi, Below is an example of a record I have, which I wish to split using the perl's split function and load it into an array. I am having tough time figuring out the exact reg-ex to perform the split. Given record: "a","xyz",0,2,48,"abcd","lmno,pqrR, stv",300,"abc",20, The delimiter to... (4 Replies)
Discussion started by: jghoshal
4 Replies

4. Shell Programming and Scripting

PERL split function

Hi... I have a question regarding the split function in PERL. I have a very huge csv file (more than 80 million records). I need to extract a particular position(eg : 50th position) of each line from the csv file. I tried using split function. But I realized split takes a very long time. Also... (1 Reply)
Discussion started by: castle
1 Replies

5. Homework & Coursework Questions

PERL split function

Hi... I have a question regarding the split function in PERL. I have a very huge csv file (more than 80 million records). I need to extract a particular position(eg : 50th position) of each line from the csv file. I tried using split function. But I realized split takes a very long time. Also... (0 Replies)
Discussion started by: castle
0 Replies

6. Shell Programming and Scripting

perl:extract 169008 with split function on /atrclips/u90/2009/169_008

On a line in a file:: /atrclips/u90/2009/169_008/Y5288900/SATHSWR_P1/1809853_SATHSWR_P1.tif,00018098539415200901_SATHSWR_P1.tif How do I use the split function to extract 169008......I tried .... foreach my $line (@lines) { ... (3 Replies)
Discussion started by: bandar007
3 Replies

7. Shell Programming and Scripting

perl-like split function for bash?

Hi! I'm doing bash shell scripting and would like to know if bash had something similar to perl's split function? Ultimately, I want to split two strings (delimeter = '.') and compare each of their values. Thus, I figured putting them in an array would be easiest. So i.e.: String 1:... (5 Replies)
Discussion started by: eur0dad
5 Replies

8. Shell Programming and Scripting

Use split function in perl

Hello, if i have file like this: 010000890306932455804 05306977653873 0520080417010520ISMS SMT ZZZZZZZZZZZZZOC30693599000 30971360000 ZZZZZZZZZZZZZZZZZZZZ202011302942311 010000890306946317387 05306977313623 0520080417010520ISMS SMT ZZZZZZZZZZZZZOC306942190000 30971360000... (5 Replies)
Discussion started by: chriss_58
5 Replies

9. Shell Programming and Scripting

perl split function

$mystring = "name:blk:house::"; print "$mystring\n"; @s_format = split(/:/, $mystring); for ($i=0; $i <= $#s_format; $i++) { print "index is $i,field is $s_format"; print "\n"; } $size = $#s_format + 1; print "total size of array is $size\n"; i am expecting my size to be 5, why is it... (5 Replies)
Discussion started by: new2ss
5 Replies

10. UNIX for Dummies Questions & Answers

split function

Hi all! I am relatively new to UNIX staff, and I have come across a problem: I have a big directory, which contains 100 smaller ones. Each of the 100 contains a file ending in .txt , so there are 100 files ending in .txt I want to split each of the 100 files in smaller ones, which will contain... (4 Replies)
Discussion started by: ktsirig
4 Replies
Login or Register to Ask a Question