Real-UID:
Real-UID is the ID of the user that launched a process.
Valid tive-UID:
Valid-UID is usually the same as the real-UID. however, sometimes a user needs to access resources (like files) that they don't have ownership. if it requires
UNIX environment Advanced Programming 8.11 mentioned in the user's actual ID, valid user ID, save the user ID set the concept of the time, I stuck, the internet to find a post, to do a detailed description. Collection of.
7.6 The USER ID of A
From: http://blog.chinaunix.net/space.php? Uid = 1877180 & Do = Blog & cuid = 1132108
In Linux, each process has three [4th] user identifiers.
Real uid: real User ID.Saved uid: saved user IDValid uid: valid user IDThe real User ID (real UID) is the
Each process in a Linux system has 2 IDs, a user ID and a valid user Id,uid, which typically represents the creator of the process (which user created), and Euid represents the process's access to files and resources (with the same permissions as
In Linux, each process has two IDs: User ID and valid user ID. uid generally indicates the process creator (which user is created ), EUID indicates the process's access permissions to files and resources (which user has the same permissions ). You
actual User id:Some articles refer to it as the real user ID, which is the ID when we log on to the UNIX system.
Valid User ID: Defines the rights of the operator. A valid user ID is a property of a process that determines the access to the file
A super user is the owner of the highest permissions of the system and the only winner of system management. a super user has super permissions and is omnipotent. if the super user is not good at management, it will pose a threat to system security.
This blog introduces several basic Linux commands, write if there are shortcomings, but also hope that readers are not hesitate to enlighten! Switch directoriesCD(changedirectory) Switch working directorySyntax: CD [directory to switch]CD : Enter
Setup Database ProviderFrom Kooboo documentKooboo CMS can almost support all the types of database, include the relational database and No-sql database. Right now, we had implemented five types database provider for text content:xml, SQLCe, SQL
In the previous two sections, we introduced the basic knowledge of users and user groups and how to manage users and user groups. Next let's take a look at other user-related commands.Finger tool for viewing user informationChfn tool for changing
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