查询远程服务器的操作系统

Question

我正在用Node.js编写一个微服务，它运行特定的命令行操作来获取特定的信息。该服务在多个服务器上运行，其中一些运行在Linux上，另一些运行在Windows上。我正在使用ssh2-exec连接到服务器并执行命令，但是，我需要一种方法来确定服务器的操作系统才能运行正确的命令。

let ssh2Connect = require('ssh2-connect');
let ssh2Exec = require('ssh2-exec');

ssh2Connect(config, function(error, connection) {
    let process = ssh2Exec({
        cmd: '<CHANGE THE COMMAND BASED ON OS>',
        ssh: connection
    });
    //using the results of process...
});

我有一个解决方案的想法:遵循this question，预先运行一些其他命令，并根据该命令的输出确定操作系统；但是，我想了解是否有更“正式”的方法来实现这一点，特别是使用SSH2库。

Answer 1

下面是我想要做的事情。//导入os模块这将允许您读取应用程序在其上运行的os类型const os = require('os')；

//define windows os in string there is only one but for consistency sake we will leave it in an array *if it changes in the future makes it a bit easier to add to an array the remainder of the code doesn't need to change
const winRMOS = ['win32']

//define OS' that need to use ssh protocol *see note above
const sshOS = ['darwin', 'linux', 'freebsd']

// ssh function
const ssh2Connect = (config, function(error, connection) => {
let process = ssh2Exec({
    if (os.platform === 'darwin') {
    cmd: 'Some macOS command'
    },
    if (os.platform === 'linux') {
    cmd: 'Some linux command'
    },
    ssh: connection
 });
 //using the results of process...
 });

 // winrm function there may but some other way to do this but winrm is the way i know how
const winRM2Connect = (config, function(error, connection) => {
let process = ssh2Exec({
    cmd: 'Some Windows command'
    winRM: connection
});
//using the results of process...
});


// if statements to determine which one to use based on the os.platform that is returned.
if (os.platform().includes(sshOS)){
  ssh2Connect(config)
} elseif( os.platform().includes(winrmOS)){
  winrm2Connect(config)
}