如何区分CLI和Perl中的CGI模式 [英] How to distinguish between CLI & CGI modes in Perl

问题描述

我应该编写一个Perl脚本，该脚本既可以在命令行中运行，也可以作为CGI脚本运行。我无法确定如何区分这两种模式。

I am supposed to write a Perl script which can be run both on the command line and as a CGI script. I haven't been able to determine how I should distinguish between the two modes.

那么您能不能让我知道如何实现逻辑？

So could you please let me know how to implement the logic?

推荐答案

您可以检查是否存在任意数量的 CGI环境变量，例如：

You can check for the presence of any number of CGI environment variables, e.g.:

if ($ENV{GATEWAY_INTERFACE})
{
      print "Content-type: text/plain\n\nLooks like I'm a CGI\n";
}
else
{
      print "I'm just a plain command line program\n";
}

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