利用Perl列出系统环境变量清单范例

#!/usr/bin/perl

#安装说明:

#复制程序代码,并存成env.cgi

#以ascii模式上传至主机cgi-bin目录后将属性改成755

$|=1;

print "Content-type: text/html\n\n";

print "<html<head<title环境变量清单</title\n";

print "</head\n";

print "<body\n";

print "<table border=1\n";

print "<tr\n";

print "<td变量名称</td\n";

print "<td目前状况</td\n";

print "</tr\n";

foreach $fieldname(keys %ENV){

print "<tr\n";

print "<td$fieldname</td\n";

print "<td$ENV{$fieldname}</td\n";

print "</tr\n\n";

}

print "</table\n";

print "</body</html\n";

exit;