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
SET-UID Program Vulnerability Experiment One, experimental descriptionSet-uid is an important security mechanism in UNIX systems. When a set-uid program runs, it is assumed to have the permissions of the owner. For example, if the owner of the
20125133 Ma GuoxiangSET-UID program Vulnerability Experiment 1. Experiment description
Set-UID is an important security mechanism in UNIX systems. When a set-UID program runs, it is assumed that it has the permissions of the owner. For example, if
First, the experimental descriptionSet-uid is an important security mechanism in UNIX systems. When a set-uid program runs, it is assumed to have the permissions of the owner. For example, if the owner of the program is root, then anyone who runs
SET-UID program Vulnerability Experiment 1. Experiment description
Set-UID is an important security mechanism in UNIX systems. When a set-UID program runs, it is assumed that it has the permissions of the owner. For example, if the program owner is
SET-UID Program Vulnerability Experiment One, experimental descriptionSet-uid is an important security mechanism in UNIX systems. When a set-uid program runs, it is assumed to have the permissions of the owner. For example, if the owner of the
First, the experimental descriptionSet-uid is an important security mechanism in UNIX systems. When a set-uid program runs, it is assumed to have the permissions of the owner. For example, if the owner of the program is root, then anyone who runs
First, the experimental descriptionSet-uid is an important security mechanism in UNIX systems. When a set-uid program runs, it is assumed to have the permissions of the owner. For example, if the owner of the program is root, then anyone who runs
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