A CGI script can't ask for input, it has to receive it in the first place, i.e. given by an HTML page web form. If it doesn't receive the input it wants, it should print a warning and quit.
Hitting submit on this webpage will cause it to load a URL like http://mysite/cgi-bin/myscript.cgi?somevalue1=asdf&somevalue2=qwerty . The method="get" is important, since POST requests work differently.
The entire string somevalue1=asdf&somevalue2=qwerty will be found in QUERY_STRING which you can process as you please. I often do something like:
...which will leave $1 as "somevalue1", $2 as "asdf", $3 as "somevalue2", and $4 as "qwerty". set -- is a special, ancient syntax which sets the shell's $1 $2 ... argument variables, and IFS is a special variable which controls what characters the shell splits on - usually spaces, but here we use it to split the CGI string on ampersands and equals.
You can process that in a loop like
Last edited by Corona688; 05-29-2017 at 12:54 PM..
Hi,
My server is set up so that all cgi scripts are run as user nobody, instead of the user's username.
Now I know you can use cgi-wrappers, but someone please give me detailed information, on how to make ALL scripts run on the server to by default, run as the user? And not to run as user... (1 Reply)
If I have a Perl CGI script (script01), which fills an array(s) with information and outputs a HTML page with a link to another CGI page (script02); is there anyway to pass the array(s) from "script01" to "script02" when the page visitor clicks the link?
Hope that makes sense!
:) (2 Replies)
Hi,
I'm developing a system which requires me to run a ksh script from within a cgi script. What sort of syntax will I need to do this, I'm sure it's simple but can't find out how anywhere!
Thanks. (2 Replies)
All,
I would like to run a cgi script in cygwin which i have installed in WinXP.
My CYGWIN directory structure is
/var/www/
drwxrwx---+ 2 user Users 0 Nov 23 16:24 cgi-bin
drwxrwx---+ 3 user Users 0 Oct 22 17:21 htdocs
drwxrwx---+ 3 user Users 0 Oct 22 17:22 icons
and another... (1 Reply)
Hi guys,
got a problem with a perl cgi script over here. I need it to run a system command to get the status of a process. Unfortunately the process is owned by a specific user and only this user can get its status. So i tried running the command from the perl cgi with "su", but then i get the... (12 Replies)
I have interesting problem.
https:/host/some/x.cgi
- this script has run twice when I call this url
But
http:/host/some/x.cgi
work fine, only once.
Output is text/plain.
If I change output format to the Content-type text/html,
then both urls works fine - executed only once. (2 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
This is a problem I am having with my 2 semester senior project. I have a LAMP server running Ubuntu 9.10 with... (8 Replies)
Hi
I am Run Perl CGI Script. In which i am running SCP Command. But I want that command to be run into background and exit the script. But Still Web page waiting for Finish the script.
I m doing like :
system ("scp -r machinename:/path/to/file/for/copy/ /path/for/ destination/directory/ &");... (3 Replies)
Hi everyone,
I want to kill process through the web, so I create html page with single bottom that run kill command in shell script with CGI.
Here is html code:
<td><form METHOD="GET" action="http://IP:port/cgi_bin/script.cgi" > <input type="submit" value= "Submit" > <INPUT name="q"... (7 Replies)
Hello,
I want to run this script on my CentOS 6 via browser :
________________________________________________________________________________________________
#!/bin/sh
echo Username?
read MY_NAME
echo Provisional file name?
read MY_FILE
echo File NAME you want to save?
read MY_FILE2... (16 Replies)
Discussion started by: juta2020
16 Replies
LEARN ABOUT DEBIAN
speedy
SPEEDY(1p)SPEEDY(1p)NAME
speedy - a persistent Perl interpreter
SYNOPSIS
speedy [ <perl options> ] [ -- <speedy options> ] [ <filename> ]
DESCRIPTION
speedy, short for SpeedyCGI, is a way to run perl scripts persistently, which can make them run much more quickly. The most common way to
make a script run persistently is by changing the interpreter line at the top of the script from:
#!/usr/bin/perl
to
#!/usr/bin/speedy
After the script is initially run, instead of exiting, the perl interpreter is kept running. During subsequent runs, this interpreter is
used to handle new executions instead of starting a new perl interpreter each time. A very fast frontend program, written in C, is exe-
cuted for each request. This fast frontend then contacts the persistent Perl process, which is usually already running, to do the work and
return the results.
Each perl script runs in its own Unix process, so one perl script can't interfere with another. Command line options can also be used to
deal with programs that have memory leaks or other problems that might keep them from otherwise running persistently.
Although SpeedyCGI is especially useful for CGI scripts, it can be used to keep any perl script running persistently. See CGI::Speedy-
CGI(3.pm) for a complete description of SpeedyCGI, including further details on CGI execution and Apache issues. This manual page is based
on that, but concentrates on running speedy from the command line.
OPTIONS
The speedy command line is the same as for regular perl, with the exception that SpeedyCGI specific options can be passed in after a "--".
For example the line:
#!/usr/bin/speedy -w -- -t300
at the top of your script will set the perl option `-w' and will pass the `-t' option to SpeedyCGI, setting the Timeout value to 300 sec-
onds.
The options can also be set at run-time from the perl script using the CGI::SpeedyCGI module.
OPTIONS AVAILABLE
See CGI::SpeedyCGI(3.pm) for a complete description of the options.
-p<string>
BackendProg : Path to the speedy backend program. (Default: /usr/bin/speedy_backend)
-B<number>
BufsizGet : Use <number> bytes as the maximum size for the buffer that receives data from the perl backend. (Default: 131072)
-b<number>
BufsizPost : Use <number> bytes as the maximum size for the buffer that sends data to the perl backend. (Default: 131072)
-g<string>
Group : Allow a single perl interpreter to run multiple scripts. See CGI::SpeedyCGI(3.pm) for details. (Default: `none')
-M<number>
MaxBackends : If non-zero, limits the number of speedy backends running for this perl script to <number>. (Default: 0)
-r<number>
MaxRuns : Once the perl interpreter has run <number> times, re-exec the backend process. Zero indicates no maximum. This option is
useful for processes that tend to consume resources over time. (Default: 500)
-t<number>
Timeout : If no new requests have been received after <number> seconds, exit the persistent perl interpreter. Zero indicates no
timeout. (Default: 3600)
-T<string>
TmpBase : Use the given prefix for creating temporary files. This must be a filename prefix, not a directory name. (Default:
`/tmp/speedy')
-v Version : Print the SpeedyCGI version and exit.
ENVIRONMENT
Environment variables can also be used to pass in options. This can only be done before the initial execution, not from within the script
itself. The name of the environment variable is always SPEEDY_ followed by the option name in upper-case. For example to set the speedy
Timeout option, use the environment variable named SPEEDY_TIMEOUT.
FILES
/tmp/speedy* A unix socket used to connect to the backend process. See speedy_backend(1) for more information.
AUTHOR
Sam Horrocks
http://daemoninc.com
sam@daemoninc.com
NOTES
This manual page was created by Niko Tyni <ntyni@iki.fi> for Debian GNU/Linux, because the original program does not have one. It is based
on the original and more complete CGI::SpeedyCGI(3pm) manual page.
BUGS
There are command-line parsing incompatibilities with the real Perl. These aren't very easy to fix, as even the perlrun manpage isn't
quite accurate on which parameters can be separated (like '-I') and which can't (like '-C'). speedy doesn't allow any of them to be sepa-
rated. It considers the first option without a leading dash as the script filename.
SEE ALSO perl(1), CGI::SpeedyCGI(3pm), speedy_backend(1)SPEEDY(1p)