There are several steps you can take to troubleshoot a problem with scripts in the cgi-bin directory not working:
cgi-bin directory should be executable by the web server. You can use the chmod command to set the appropriate permissions on the scripts. For example:chmod 755 /path/to/cgi-bin/*
This will set the permissions on all of the scripts in the cgi-bin directory to allow execution by the owner and read access by everyone else.
Check the web server's error logs. The web server may be generating error messages that can help you identify the cause of the problem. You can check the error logs for the web server to see if there are any messages related to the scripts in the cgi-bin directory.
Check the scripts for syntax errors. Make sure that the scripts are written in a supported language and that they do not contain any syntax errors. You can use a tool such as lint or perl -c to check for syntax errors in scripts written in languages such as Perl or Python.
Check the script's shebang line. The shebang line at the top of a script should specify the path to the interpreter for the script. Make sure that the shebang line is correct and that the interpreter specified is installed on the system.
Check the web server's configuration. Make sure that the web server is configured to execute scripts in the cgi-bin directory. The configuration may vary depending on the web server you are using. Consult the documentation for your web server to learn more about how to configure it to execute scripts in the cgi-bin directory.
By following these steps, you should be able to identify and fix any problems that may be preventing your scripts in the cgi-bin directory from working.