process.setegid(id)

• id <string> | <number> 一个用户组名或用户组ID

process.setegid()方法为进程设置有效的用户组ID。(请看 setegid(2).) id可以传一个数值ID或传一个用户组名称字符串。如果传了后者的话，会解析成一个相关的数值ID， 解析的时候，这个方法方法是阻塞的。

if (process.getegid && process.setegid) {
  console.log(`Current gid: ${process.getegid()}`);
  try {
    process.setegid(501);
    console.log(`New gid: ${process.getegid()}`);
  } catch (err) {
    console.log(`Failed to set gid: ${err}`);
  }
}

注意: 这个方法只在POSIX平台可用(换句话说，Windows或Android不行)。

• id <string> | <number> A group name or ID

The process.setegid() method sets the effective group identity of the process. (See setegid(2).) The id can be passed as either a numeric ID or a group name string. If a group name is specified, this method blocks while resolving the associated a numeric ID.

if (process.getegid && process.setegid) {
  console.log(`Current gid: ${process.getegid()}`);
  try {
    process.setegid(501);
    console.log(`New gid: ${process.getegid()}`);
  } catch (err) {
    console.log(`Failed to set gid: ${err}`);
  }
}

This function is only available on POSIX platforms (i.e. not Windows or Android). This feature is not available in Worker threads.