![]() There is no correlation between UID and GID required by any *NIX system they just happen to coincide in some cases. ![]() Any user using a UNIX system at a given time has both a user ID (UID) and a. By default gid for the next added user = max(gid) + 1. A user can be a member of more than one group and thus have more than one GID. I checked the user and group and some of users uid and gid are different so I just wanna make them synchronized. The statement is true only if no ordinary groups are added separately and no groups are explicitly specified on any user creation. Im really new about linux so this question is pretty dumb i know. However, as points out it is not true that the UID will be equal to GID by default. If you look at the binary executable file of the passwd command, it has the SUID bit set. The third field contains the UID, and the fourth field contains the group ID (GID), which by default is equal to the UID for all ordinary users. What is SUID When the SUID bit is set on an executable file, this means that the file will be executed with the same permissions as the owner of the executable file. UIDs are stored, along with their corresponding user names and other user-specific information, in the /etc/passwd file, which can be read with the cat command as follows: cat /etc/passwd This command will change the permissions on a file or directory. The UID and GID can also be set using the chmod command. This command will change the ownership of a file or directory. Con el comando id podemos obtener los datos de UID, GID y los grupos a los que pertenece un usuario. Each user is identified to the system by its UID, and user names are generally used only as an interface for humans. I solved the problem making uniform uid and gid in the VM (guest) and in the host (since in the beginning they were different). In Linux, the user ID (UID) and group ID (GID) can be set in a number of ways. From this link, I see the below information.Ī user ID (UID) is a unique positive integer assigned by a Unix-like operating system to each user.
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