Perl, Checking if a URL exists in Perl

Checking if a URL exists in Perl

Author	Message
Makarand Kulkarn #1 / 5	Checking if a URL exists in Perl Quote: > I have a problem, and I cannot seem to overcome it. > I have a form in which the users add a url, and the cgi is supposed to check > if the url exists, and if > so, index it. Otherwise, throw an exception or something.. But I can't seem > to find how to check if > the file exists. Can you help me? There is no reliable way to do this. You can only check if a URL is accessible at a particular point of time. Use LWP::UserAgent or LWP::Simple to do this. --
Wed, 18 Jun 1902 08:00:00 GMT

Yuval Kale #2 / 5	Checking if a URL exists in Perl Hi ! I have a problem, and I cannot seem to overcome it. I have a form in which the users add a url, and the cgi is supposed to check if the url exists, and if so, index it. Otherwise, throw an exception or something.. But I can't seem to find how to check if the file exists. Can you help me? Greetings, - Yuval
Wed, 18 Jun 1902 08:00:00 GMT

Jonas Peterse #3 / 5	Checking if a URL exists in Perl Yuval Kalev schrieb: Quote: > Hi ! > I have a problem, and I cannot seem to overcome it. > I have a form in which the users add a url, and the cgi is supposed to check > if the url exists, and if > so, index it. Otherwise, throw an exception or something.. But I can't seem > to find how to check if > the file exists. Can you help me? Try the Module LWP::Simple (or LWP::UserAgent for more advanced things) Jonas
Wed, 18 Jun 1902 08:00:00 GMT

Abiga #4 / 5	Checking if a URL exists in Perl MCMXCIII in <URL::"> "" Hi ! "" I have a problem, and I cannot seem to overcome it. "" I have a form in which the users add a url, and the cgi is supposed to check "" if the url exists, and if "" so, index it. Otherwise, throw an exception or something.. But I can't seem "" to find how to check if "" the file exists. Can you help me? I am confused by this question. The user "adds" a URL, then the "cgi" (I presume you mean 'a program using CGI to interface with the server', as CGI is a protocol, on a program) checks whether the URL exists (I'm not sure what you mean by "a URL exists" - you probably have in your mind some restricted definition of "URL", and some idea what "exists" means) and then you suddenly make the leap to "check if the file exists". The answer to the latter is trivially found in the manual, so I won't bother telling you. But what has that to do with URLs? Abigail -- %0=map{reverse+chop,$_}ABC,ACB,BAC,BCA,CAB,CBA;$_=shift().AC;1while+s/(\d+)((.) (.))/($0=$1-1)?"$0$3$0{$2}1$2$0$0{$2}$4":"$3 => $4\n"/xeg;print#Towers of Hanoi -----------== Posted via Newsfeeds.Com, Uncensored Usenet News ==---------- http://www.newsfeeds.com The Largest Usenet Servers in the World! ------== Over 73,000 Newsgroups - Including Dedicated Binaries Servers ==-----
Wed, 18 Jun 1902 08:00:00 GMT

Abiga #5 / 5	Checking if a URL exists in Perl MCMXCIII in <URL::"> Really? Is LWP::Simple going to tell me anything about FTP urls? How about mailto? news? nntp? telnet? gopher? prospero? wais? mid? nfs? ldap? imap? z39_50? cid? vemmi? Abigail -- perl -e '$_ = q 4a75737420616e6f74686572205065726c204861636b65720a; for ($=***;$=****;$=****) {$=******s..qq} print chr 0x$& and q qq}excess********}' -----------== Posted via Newsfeeds.Com, Uncensored Usenet News ==---------- http://www.newsfeeds.com The Largest Usenet Servers in the World! ------== Over 73,000 Newsgroups - Including Dedicated Binaries Servers ==-----
Wed, 18 Jun 1902 08:00:00 GMT

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