linux get user id

Actual user ID, valid user ID, and set user ID   These concepts are often encountered when reading Unix-related books, but these concepts have not been properly clarified, so that they have been completely understood. I have made a distinction

To log in to a computer, we need a username. A user name is an identity that can be recognized by a computer. Based on this, the computer applies a series of rules to people who log on with this user name. Under the Linux system, we can use the ID

Basic attributes of a process: process ID, parent process ID, process group ID, session, and control terminal.Abstract:This document describes the basic attributes of a process, including process ID, parent process ID, process group ID, session, and

OverviewSometimes the user device needs to be identified, so you want to get a stable and reliable and unique identification code. Although such device identifiers are available in the Android system, stability and uniqueness are not ideal due to

On the first, straight hit Linux:12 asked 1. What is Linux? Linux is an exotic operating system that is born on the web, growing up on the web, and ripe for networking. In the 1991, Finnish college student Linus Torvalds The idea of developing a

HTTP://WWW.IBM.COM/DEVELOPERWORKS/CN/LINUX/L-LSM/PART1/1. Related background: Why and whatIn recent years, Linux system has been widely concerned and applied by computer industry because of its excellent performance and stability, the flexibility

has started to contact Linux User Management, user group management, and Rights management These are a few of the full of keywords. These key words for the front-end program Ape I really is very tall on the wood there, before trying to learn Linux

Objective Only a bald head can become stronger. Review Front: After reading this Linux basic operation will be Did not think of the last one can be in the knowledge of the thousand praise Ah, Linux is also the final exam,

Transfer from csdn,http://blog.csdn.net/warden2010/article/details/5132290, thank you, author.In a Linux system, all users and groups are like a country. If the country is to prosper, it needs to be well-governed, with the President or president,

1, (think) the system why to have users1.1 Users?? The lowest-level security settings in the system, and reclaim (limit) rights.1.2 Groups?? Share rights. Divided into the following two kinds:?? (1) Additional groups: groups determined by the user