C++/Php/Python 语言执行shell命令

#include <iostream>
#include <string>
#include <stdio.h> int exec_cmd(std::string cmd, std::string &res){
if (cmd.size() == ){ //cmd is empty
return -;
} char buffer[] = {};
std::string result = "";
FILE *pin = popen(cmd.c_str(), "r");
if (!pin) { //popen failed
return -;
} res.clear();
while(!feof(pin)){
if(fgets(buffer, sizeof(buffer), pin) != NULL){
result += buffer;
}
} res = result;
return pclose(pin); //-1:pclose failed; else shell ret
} int main(){
std::string cmd = "ls -ial";
std::string res; std::cout << "ret = " << exec_cmd(cmd, res) << std::endl;
std::cout << res << std::endl; return ;
}

<?php
$cmd = "wc -l ./test.php";
exec($cmd, $output, $code); echo $code."\n";
print_r($output);
?>

import commands status, output = commands.getstatusoutput('ls -lt') print status
print output