同一个cgi-bin文件夹下的两个测试程序，一个可以运行，另一个不能运行？

test.cgi的源码：

#!/bin/sh # disable filename globbing set -f echo "Content-type: text/plain; charset=iso-8859-1" echo echo CGI/1.0 test script report: echo echo argc is $#. argv is "$*". echo echo SERVER_SOFTWARE = $SERVER_SOFTWARE echo SERVER_NAME = $SERVER_NAME echo GATEWAY_INTERFACE = $GATEWAY_INTERFACE echo SERVER_PROTOCOL = $SERVER_PROTOCOL echo SERVER_PORT = $SERVER_PORT echo REQUEST_METHOD = $REQUEST_METHOD echo HTTP_ACCEPT = "$HTTP_ACCEPT" echo PATH_INFO = "$PATH_INFO" echo PATH_TRANSLATED = "$PATH_TRANSLATED" echo SCRIPT_NAME = "$SCRIPT_NAME" echo QUERY_STRING = "$QUERY_STRING" echo REMOTE_HOST = $REMOTE_HOST echo REMOTE_ADDR = $REMOTE_ADDR echo REMOTE_USER = $REMOTE_USER echo AUTH_TYPE = $AUTH_TYPE echo CONTENT_TYPE = $CONTENT_TYPE echo CONTENT_LENGTH = $CONTENT_LENGTH

可以在浏览器中正常运行。

但是另一个程序printenv:

#!/bin/sh # #  printenv -- demo CGI program which just prints its environment # print "Content-type: text/plain; charset=iso-8859-1\n\n"; foreach $var (sort(keys(%ENV))) {     $val = $ENV{$var};     $val =~ s|\n|\\n|g;     $val =~ s|"|\\"|g;     print "${var}=\"${val}\"\n"; }

单独在命令行状态下运行printenv正常，在浏览器中就报告500错误，日志中显示：　 Premature end of script headers: printenv。

服务器装rh9, Apache/2.0.54 (Unix) DAV/2 PHP/4.4.0

/bin/sh 支持 foreach 吗？

把#!/bin/sh换成perl路径