Preserved Topic: The Amazing Crashing 8 line program! (Page 1 of 1)

Only I can crash a perl script in only 8 lines... anybody know why?

#!/usr/bin/perl



use CGI;

my $mystuff = new CGI;



########-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The CGI Input

# Picking up the inputs                                                    #

# To place the input value in a variable, type the following:              #

# my $nameOfVariable = $mystuff->param('nameOfInputField');                #

################################################################

my $name = $mystuff->param('alias');

my $email = $mystuff->param('email');

my $message = $mystuff->param('messagetext');

#########-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The Global Variables



########-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The Program



print "Content-type: text/plain\n\n";

print "Value of name: $name<br>";

print "Value of terrorist: $message<br>";



########-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The Stored Data

# None- now....

########-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= The Subroutines

# None- now....

Code - CGI - links - DHTML - Javascript - Perl - programming - Magic - http://www.twistedport.com
ICQ: 67751342

Well, for one thing, change that text/plain to text/html if you want your <br>s to work. But I don't know what the error is. Don't you have access to the error logs?

sorry.... I shoulda led with that..... I was just really pissed..

"Premature end of script headers:"


Code - CGI - links - DHTML - Javascript - Perl - programming - Magic - http://www.twistedport.com
ICQ: 67751342

tis probaby the text/html thing.

When in doubt the CGI module will auto generate your headers

in your case
print $mystuff->header();

should do it you can also change this by passing it params but the default it text/html



.:[ Never resist a perfect moment ]:.

Actually, we fixed this. Turns out to be a combo path/rights issue.
The server likes to see
#!/usr/bin/perl -w
as the path (instead of #!/usr/bin/perl). Once we changed this and CHMODed to 755 (instead of 777), it ran fine.

what you need the -w switch?
That's just for verbose debugging I wouldn't think it mattered.



.:[ Never resist a perfect moment ]:.

As Bitdamaged said above, '-w' command-line switch should be optional. The real problem was with file permission, CGI scripts must be CHMODed 755 or they won't work...

wow... learned a bunch of new things debugging this...

btw, thanks Pugz...

now it's tossing a "Can't locate object method "new" via package "CGI" at guestbook.cgi line 8. "

on this line:

use CGI::Carp qw(fatalsToBrowser);

[b]my $mystuff = new CGI;[/b]



my $name = $mystuff->param('alias');

my $email = $mystuff->param('email');

my $message = $mystuff->param('messagetext');

I've always been taught (by....um.... myself....) that that was the proper way to use the CGI module.... isn't it?


Code - CGI - links - DHTML - Javascript - Perl - programming - Magic - http://www.twistedport.com
ICQ: 67751342

ok, by adding this line:
"use CGI qw(:standard);"
everything falls into place..

yay! thanks, ya'll....

but now, even though the output to the browser is actually working, it still doesn't write to the file....

*yoda* still long, the path is...



Code - CGI - links - DHTML - Javascript - Perl - programming - Magic - http://www.twistedport.com
ICQ: 67751342

Hi Petskull,

If you're using the OO interface for the CGI module you don't really need to import the methods. You can change use CGI qw(:standard); to use CGI; and it will do all the importing for you as it's needed. I agree that the -w switch is optional but I recommend that you always use it and also use strict; in your scripts. That really catches a lot of small problems/errors that might slip by. Eventually it cuts down on your debug time too

quote:

---

but now, even though the output to the browser is actually working, it still doesn't write to the file....

---

Want to show the rest of the code so I can peek at it?


Regards,
Charlie

*sorry, I'll answer you later- but right now I'm really fucking stressed (family stuff)*

what the fuck is 'concatenation'?

Use of uninitialized value in concatenation (.) or string at guestbook.cgi line 35.


Code - CGI - links - DHTML - Javascript - Perl - programming - Magic - http://www.twistedport.com
ICQ: 67751342

Concatenation is merging two strings into one.

for example:
"hello" + " " + "there" => "hello there"

Only in Perl, this is done with the . operator, for example:

"hello" . " " . "there" => "hello there"