Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

Real-Time TextIO

Posted on 2002-03-05
4
Medium Priority
?
135 Views
Last Modified: 2010-03-05
Hi,

I need to be able to write text into a file immediately, however, I notice that all of my writing is being done at the end of my program.

I've tried closing and re-opening my file pointer but that doesn't work.

    open (LOG_FILE,">>./AUTO_LOG/AUTO_v1_0.log");
    print LOG_FILE ("\nStuff...\n");
    close (LOG_FILE);

How do I immediately force text out to a file?

Thanks in advance,
Alex
0
Comment
Question by:Alex_Tong
  • 2
4 Comments
 
LVL 19

Expert Comment

by:Kim Ryan
ID: 6843220
You need to turn the buffering off at the start of your script

$| = 1;

0
 
LVL 16

Expert Comment

by:maneshr
ID: 6843450
Alex_Tong,

Welcome back!!

You have the following question open for a long time now. Please take some time to close this question.

EE userid Alex_Tong
Total questions asked 29 (100%)
Open questions 1
       
Topic Area              URL              Date              
C Programming   http://www.experts-exchange.com/jsp/qShow.jsp?ta=cprog&qid=20079044   02/16/01  

Your help in closing this question will be highly appreciated.

Thanks

maneshr
(NOT a moderator at EE)
0
 
LVL 1

Accepted Solution

by:
japhyRPI earned 200 total points
ID: 6843548
teraplane was close, but you need to turn off buffering for the filehandle(s) you need, via the select() function:

  open LOGFILE, ">> logfile" or
    die "can't append to logfile: $!";
  {
    my $oldfh = select LOGFILE;
    $| = 1;
    select $oldfh;
  }
  # ...
0
 
LVL 16

Expert Comment

by:maneshr
ID: 6845649
Alex_Tong,

Thank you for taking the time to close the open question.

Your help is highly appreciated.

maneshr
(NOT a moderator at EE)
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

On Microsoft Windows, if  when you click or type the name of a .pl file, you get an error "is not recognized as an internal or external command, operable program or batch file", then this means you do not have the .pl file extension associated with …
In the distant past (last year) I hacked together a little toy that would allow a couple of Manager types to query, preview, and extract data from a number of MongoDB instances, to their tool of choice: Excel (http://dilbert.com/strips/comic/2007-08…
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…
Six Sigma Control Plans

927 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