Node.js process.seteuid()方法
原文:https://www . geesforgeks . org/node-js-process-seteuid-method/
process.seteuid()方法是流程模块的内置应用编程接口，用于设置 Node.js 流程的有效用户标识。
语法:
process.seteuid( 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，表示数字 id 或用户名字符串。如果传递了用户名，它会在解析相关数字标识时阻塞。
返回值:不返回值。
注意:此功能仅在 POSIX 平台上有效。它在 windows 或 android 平台上不可用，因此会导致错误，即 TypeError，seteuid 不是函数。
下面的例子说明了 process.seteuid()方法在 Node.js 中的使用:
例 1:
java 描述语言
// Node.js program to demonstrate the
// process.seteuid() method
// Include process module
const process = require('process');
// Printing the effective user identity
// of the Node.js process and checking
// whether the method exists or not
if (process.geteuid && process.seteuid ) {
// Setting user id
process.seteuid(400);
// Printing geteuid()
console.log("The effective user identity "
+ "of the Node.js process:"
+ process.geteuid());
}
输出:
The effective user identity of the Node.js process: 400
例 2:
java 描述语言
// Node.js program to demonstrate the
// process.seteuid() method
// Include process module
const process = require('process');
// Set user id and checking whether
// the method exists or not
if (process.seteuid) {
// Within try catch
try {
process.seteuid(696);
console.log("User id has successfully been set");
} catch (err) {
console.log("Failed to set user id:", err);
}
}
// Checking whether the method exists or not
if (process.geteuid) {
// Printing geteuid() value
console.log("The numerical effective user "
+ "identity of the Node.js process:"
+ process.geteuid());
}
输出:
User id has successfully been set
The numerical effective user 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 _ seteuid _ id
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