这是个什么文件?!?!

这是运行结果：
DOCUMENT_ROOT="/usr/local/apache/htdocs"
GATEWAY_INTERFACE="CGI/1.1"
HTTP_ACCEPT="image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/vnd.ms-powerpoint, application/vnd.ms-excel, application/msword, */*"
HTTP_ACCEPT_ENCODING="gzip, deflate"
HTTP_ACCEPT_LANGUAGE="zh-cn"
HTTP_CONNECTION="Keep-Alive"
HTTP_HOST="192.168.2.10"
HTTP_USER_AGENT="Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)"
PATH="/usr/sbin:/usr/bin"
QUERY_STRING=""
REMOTE_ADDR="192.168.2.3"
REMOTE_PORT="1104"
REQUEST_METHOD="GET"
REQUEST_URI="/cgi-bin/printenv"
SCRIPT_FILENAME="/usr/local/apache/cgi-bin/printenv"
SCRIPT_NAME="/cgi-bin/printenv"
SERVER_ADDR="192.168.2.10"
SERVER_ADMIN="root@sunserver"
SERVER_NAME="sun.tcte.com"
SERVER_PORT="80"
SERVER_PROTOCOL="HTTP/1.1"
SERVER_SIGNATURE="<ADDRESS>Apache/1.3.24 Server at sun.tcte.com Port 80</ADDRESS>\n"
SERVER_SOFTWARE="Apache/1.3.24 (Unix) PHP/4.2.0 mod_ssl/2.8.8 OpenSSL/0.9.6d"
TZ="PRC"这应该是一个测试文件，它打印出来的是WEB服务器(apache)传送给CGI的环境变量。