nodeJS exec不适用于“cd” shell cmd [英] nodeJS exec does not work for "cd " shell cmd

问题描述

var sys = require('sys'),
    exec = require('child_process').exec;

exec("cd /home/ubuntu/distro", function(err, stdout, stderr) {
        console.log("cd: " + err + " : "  + stdout);
        exec("pwd", function(err, stdout, stderr) {
            console.log("pwd: " + err + " : " + stdout);
            exec("git status", function(err, stdout, stderr) {
                console.log("git status returned " ); console.log(err);
            })
        })
    })

---

---

cd: null :

pwd: null : /

git status returned 
{ [Error: Command failed: fatal: Not a git repository (or any of the parent directories): .git ] killed: false, code: 128, signal: null }

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nodeJS exec不适用于cdshell cmd。如下所示，pwd工作，git状态正在尝试工作，但是失败，因为它不在git目录中执行，但cd cmd无法停止其他cmds的进一步执行。
尝试在nodeJS shell以及nodeJS + ExpressJS webserver中。

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nodeJS exec does not work for "cd " shell cmd. as you see below, pwd works, git status is trying to work but fails because it is not executed in a git directory, but cd cmd fails stopping further successful execution of other cmds. Tried in nodeJS shell as well as nodeJS+ExpressJS webserver.

推荐答案

每个命令在单独的shell中执行，所以第一个 cd 仅影响那个然后终止的shell进程。如果要在特定目录中运行 git ，只需要为您设置路径：

Each command is executed in a separate shell, so the first cd only affects that shell process which then terminates. If you want to run git in a particular directory, just have Node set the path for you:

exec('git status', {cwd: '/home/ubuntu/distro'}, /* ... */);

cwd （当前工作目录） 许多可用于 exec 的选项。

cwd (current working directory) is one of many options available for exec.

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