安装twiki时，遇到错误提示 Can't locate CGI.pm in @INC
CGI模块没有正确安装
CGI不包含在Perl的标准发行版中
CGI.pm,for all of its useful and amazing features,is just one of the many terrific Perl 5 modules that isn't included with the standard Perl distribution.
使用CPAN也不能正确安装CGI模块
perl -e shell -MCPAN
<cpan> install CGI
只能单独安装perl-CGI
yun install perl-CGI安装成功。