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Full Discussion: perl cgi script not working
Top Forums Web Development perl cgi script not working Post 302586138 by z1dane on Friday 30th of December 2011 08:40:07 AM
Old 12-30-2011
Hi yifangt,

This line may be the problem:

Quote:
Originally Posted by yifangt
Hello,
8 my $filename = $q->param('/home/yifangt/hello.cgi');
param is used to capture the parameters passed to a cgi script. For example if your cgi script is called test.cgi,

and you ran this script on your web server as

test.cgi?test=1

then, this variable $q->param('test') would be 1.

Since you probably don't have a parameter named '/home/yifangt/hello.cgi', $filename is an uninitialized value, therefore line 9 is an error

Can't use an undefined value as a HASH reference at /usr/lib/cgi-bin/Listing4-2.cgi line 9.

Hope that helps,

Dave
 

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LEARN ABOUT DEBIAN

cgi_redirect

cgi_redirect(3) 						     cgi/cgi.h							   cgi_redirect(3)

NAME

       cgi_redirect  - send an HTTP 302 redirect response

SYNOPSIS

       #include <cgi/cgi.h>

       void cgi_redirect (CGI *cgi, const char *fmt, ...)
			  ATTRIBUTE_PRINTF(2,3);

ARGUMENTS

       cgi - cgi struct
       fmt - printf style format with args

DESCRIPTION

       cgi_redirect will redirect the user to another page on your site.  This version takes only the path portion of the URL.	As with all printf
       style commands, you should not call this with arbitrary input that may contain % characters, if you are forwarding something directly,  use
       a format like cgi_redirect (cgi, "%s", buf)

RETURN VALUE

       None

SEE ALSO

       cgi_debug_init(3),  cgi_parse(3),  cgi_destroy(3),  cgi_js_escape(3),  cgi_html_escape_strfunc(3), cgi_register_strfuncs(3), cgi_output(3),
       parse_rfc2388(3), cgi_url_validate(3), open_upload(3), cgi_cs_init(3), cgi_url_escape_more(3), cgi_html_strip_strfunc(3), cgi_neo_error(3),
       cgi_redirect(3),  cgi_filehandle(3),  cgi_register_parse_cb(3),	cgi_url_escape(3),  cgi_init(3), cgi_redirect_uri(3), cgi_cookie_clear(3),
       cgi_url_unescape(3), cgi_vredirect(3), cgi_display(3),  cgi_html_ws_strip(3),  cgi_error(3),  cgi_cookie_set(3),  cgi_text_html_strfunc(3),
       cgi_cookie_authority

ClearSilver							   12 July 2007 						   cgi_redirect(3)
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