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This article shows you how to set ACL permissions for zm in Linux, which is concise and easy to understand, which will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Account number and group of Linux

The user's account / group corresponds to UID/GID, refer to / etc/passwd and / etc/group.

Account number

/ etc/passwd file structure

Separated by colons, it is divided into seven fields, namely, "account name, password, UID, GID, full name, home folder, shell".

[root@study ~] # head-n 4 / etc/passwdroot:x:0:0:root:/root:/bin/bash

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