Question

我正在尝试为我的nodeJS应用程序编写一个stop命令，该命令为一个节点进程进行greps并将其终止，到目前为止我已经：

{
  ...
  "scripts": {
    "start": "node src/main/webapp/index.js",
    "stop": "kill \"$(ps ux | grep node | grep -Eo '^\\s+[0-9]+' | tr -d '[[:space:]]')\""
  }
  ...
}

如果我运行ps ux，我会

  PID    PPID    PGID     WINPID   TTY         UID    STIME COMMAND
12228    8428   12228      12960  cons0     197608 22:02:12 /usr/bin/ps
 4840       1    4840       4840  cons0     197608 22:01:46 /usr/bin/bash
13484   12292   12292       8024  cons0     197608 22:02:07 /c/Program Files/nodejs/node

如果我运行echo "$(ps ux | grep node | grep -Eo '^\s+[0-9]+' | tr -d '[[:space:]]')"，那么我得到输出13484，所以我知道该位有效。但是当我运行npm stop时，我收到错误：

npm ERR! Windows_NT 6.3.9600
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "stop"
npm ERR! node v0.12.4
npm ERR! npm  v2.10.1
npm ERR! code ELIFECYCLE
npm ERR! app@1.0.0 stop: `kill "$(ps ux | grep node | grep -Eo '^\s+[0-9]+' | tr -d '[[:space:]]')"`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the app@1.0.0 stop script 'kill "$(ps ux | grep node | grep -Eo '^\s+[0-9]+' | tr -d '[[:space:]]')"'.
npm ERR! This is most likely a problem with the app package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     kill "$(ps ux | grep node | grep -Eo '^\s+[0-9]+' | tr -d '[[:space:]]')"
npm ERR! You can get their info via:
npm ERR!     npm owner ls app
npm ERR! There is likely additional logging output above.

这为什么会破裂？有更简单的方法吗？

Answer 1

这似乎有效：

"scripts": {
  "start": "node src/main/webapp/index.js & echo $! > .pid",
  "stop": "kill $(cat .pid)"
}

也许这对你想要达到的目标来说已经足够了，但我想有更好的方法。

使用package.json stop脚本终止节点进程

1 个答案: