Node.js process.setgid()方法
原文:https://www . geesforgeks . org/node-js-process-setgid-method/
process.setgid()方法是流程模块的内置应用编程接口,用于设置 Node.js 流程的组标识。 语法:
process.setgid(id)
参数:该方法接受如上所述的单个参数,描述如下:
- id: 它是一个必需的参数,包含一个字符串或一个整数,表示组名或标识,如果组名被传递,它会在解析相关的数字标识时阻塞。
返回:不返回值。 注意:这个功能只会在 POSIX 平台上工作。在 windows 或 android 平台上不可用,因此会导致错误,即 TypeError,setgid 不是函数。 以下示例说明了 process.setgid()方法在 Node.js: 示例 1: 中的使用
java 描述语言
// Node.js program to demonstrate the
// process.setgid() Method
// Including process module
const process = require('process');
// Printing the group identity of
// the Node.js process that checks
// whether the methods exists or not
if (process.getgid && process.setgid ) {
// Setting gid
process.setgid(400);
// Printing getgid() value
console.log("The group identity of the Node.js"
+ " process:", process.getgid());
}
输出:
The group identity of the Node.js process: 400
例 2:
java 描述语言
// Node.js program to demonstrate the
// process.setgid() Method
// Including process module
const process = require('process');
// Set gid and check whether the
// method exists or not
if (process.setgid) {
// Within try catch
try {
process.setgid(696);
console.log("gid has successfully been set");
} catch (err) {
console.log("Failed to set gid:", err);
}
}
// Check whether the method exists or not
if (process.getgid) {
// Printing getgid() value
console.log("The group identity of the Node.js"
+ " process:", process.getgid());
}
输出:
gid has successfully been set
The group identity of the Node.js process: 696
注意:以上程序将使用 node filename.js 命令编译运行。 参考:https://nodejs . org/API/process . html # process _ process _ setgid _ id
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