shelljs

参考文章
用于在node中执行终端命令
导入

import shell from 'shelljs'

1. cat返回文件内容

   var str = shell.cat('file*.txt');
   var str = shell.cat('file1', 'file2');
   var str = shell.cat(['file1', 'file2']); // same as above

2. pwd获取当前目录

   const cur = shell.pwd()

3. find查找文件

   find('src', 'lib');
   find(['src', 'lib']); // same as above
   find('.').filter(function(file) { return file.match(/\.js$/); });

4. mkdir创建目录

   mkdir('-p', '/tmp/a/b/c/d', '/tmp/e/f/g');
   mkdir('-p', ['/tmp/a/b/c/d', '/tmp/e/f/g']); // same as above

exec(command [, options] [, callback])

Available options:

• async: 是否异步执行，默认为false，如果给定callback则为异步
• fatal: 发生错误时退出，默认为false
• silent: 不要输出console结果，默认为false
• encoding: Character encoding to use. Affects the values returned to stdout and stderr, and what is written to stdout and stderr when not in silent mode (default: ‘utf8’).
• and any option available to Node.js’s child_process.exec()

例子：

var version = exec('node --version', {silent:true}).stdout;
var child = exec('some_long_running_process', {async:true});
child.stdout.on('data', function(data) {
  /* ... do something with data ... */
});
exec('some_long_running_process', function(code, stdout, stderr) {
  console.log('Exit code:', code);
  console.log('Program output:', stdout);
  console.log('Program stderr:', stderr);
});