1. 目录下文件搜索

#!/usr/bin/perl
&find_fileindir("/usr/local/apache/htdocs");
sub find_fileindir(){
  local($dir) = @_;
  opendir(DIR,"$dir"|| die "can't open this $dir");
  local @files =readdir(DIR);
  closedir(DIR);
  for $file (@files){
    next if($file=~m/\.$/ || $file =~m/\.\.$/);
    if ($file =~/\.(html|htm|shtml)$/i){
        print "$dir\/$file \n";
    }
    elsif(-d "$dir/$file"){
            find_fileindir("$dir/$file" );
    }
  }
}

2. C调用perl，或者，http://www.hailongchang.org/index.php/archives/365

要调用特定的 Perl 函数，可使用 call_argv 函数。该函数调用一个指定的函数，包括给该 Perl 函数提供任何参数的能力。

#include <EXTERN.h>
#include <perl.h>

static PerlInterpreter *my_perl;

int main(int argc,char **argv,char **env)
{
  char *print_args[] = {"This","is","a","list","of","printable","items","\n",NULL};

  my_perl = perl_alloc();
  perl_construct(my_perl);
  perl_parse(my_perl,NULL,argc,argv,NULL);
  PL_exit_flags |= PERL_EXIT_DESTRUCT_END;

  call_argv("printwrap",G_DISCARD,print_args);

  perl_destruct(my_perl);
  perl_free(my_perl);
}