what group id

Linux file permissionsEach file belongs to one user and one group. This is the core of the permissions model in Linux. Each file has a 10-tuple representing the file's type and file owner, the group user to which the file belongs, and other users '

I. User ID The user ID in the password file (/etc/passwd) is a numerical value, which identifies different users to the system. The system administrator determines the user ID while determining the login name of a user. Users cannot change their

Message passing is widely used in various websites. This function is also essential for a website. This article mainly introduces the application of Redis in php-message transmission. Next, let's take a look at the small series. message passing is

Well, when reading a book, I can't remember what the ID corresponds to, so ~~   User ID 1. User ID: the user ID in the logon entry of the password file is a numerical value, which identifies different users to the system. The system administrator

in a Linux system, each process belongs to a process group, and each process group has a process group ID (pgid), and the value of the process group ID equals the process ID of the leader process. The first program that is typically executed under

  1. Terminal Login Logon Process: Kernel ---> init [process ID = 1] ---> (fork) init ---> (exec) getty ---> (exec) ---> login Logon End Process: Process 1 = init-> logon shell terminal device driver end user     2. network logon For example    

Process RelationshipsProcess GroupA process group is a collection of one or more processes. Typically, they are combined in the same job, and each process in the same process group receives various signals from the same terminal, each with a unique

2) Introduction to Linux programming--process Introduction to the creation of a process under Linux preface: This article is used to describe the various concepts that are related to processes under Linux. We will learn: the process of conceptual

C language programming in Linux-Process Creation Author: Hoyt 1. Process Concept The Linux operating system is intended for multiple users. At the same time, many users can issue various commands to the operating system. How does the operating

1. Process identifiersThe two basic identifier PID and PPID for the process described in the previous Process Description section will now detail the other identifiers of the process.Each process has a non-negative shaping that represents a unique

This chapter describes in detail the concepts of process groups and the sessions introduced by POSIX.1. It also describes the relationship between the login shell and all processes initiated from the login shellTerminal LoginBSD Terminal login. The

In the previous chapters we learned that there is a correlation between processes: Each process has a parent process; When a child process exits, the parent process can perceive and get the exit status of the child process. In this

Linux is a multi-user and multi-task time-sharing operating system. UserYou must first apply for an account from the system administrator and then enter the system as this account. The user's account helps the system administrator UserTracking and

Linux User and User Group Management Linux is a multi-user multi-task time-sharing operating system. any user who wants to use system resources must first apply for an account from the system administrator and then enter the system as the

---restore content starts---A process is a process that a program executes at a time and is the basic unit of dynamic execution of the operating system.The concept of the process is mainly two points: first, the process is an entity. Each process

original link: http://blog.csdn.net/chosen0ne/article/details/10581883Access to the process checksum file includes two parts, one determining the role of the process (which user or group belongs to), and the other is determining whether the

Verifying a file's access to a process includes two parts, one that determines the role of the process (which user or group it belongs to), and the other is whether the corresponding role has permissions for the action. First look at the first part.

Green represents the process (the nature of the process) orange represents the file (the nature of the file). When the process tries to open the file, the kernel tests the following permissions:0. id is 0 (Superuser), which allows access. 1

In the previous article, we talked about a lot of IPv6 address-related content and learned the differences between IPv6 addresses and traditional version IP addresses and the meanings of some new content, now let's expand this part of content. Now

In this article, I will discuss how to configure a Unix client based on the Network File System and use Kerberos security verification through the rpcsec_gss protocol to connect to a Windows Server under the Network File System. Traditional Network