Create a new user in Linux and grant permissions to the specified directory

1 Create a user and specify the user's root path and password

useradd -d /home/mydir -m username

Users created in this way can log in using ssh, but have only read-only permissions to browse and download some files but cannot write or modify them.

It is recommended to obtain permissions for the specified path by adding the user to a group.

2 Set a password

passwd username

3 User Authorization

chown -R username: username /home/ mydir
chmod 755 /home/mydir

4 Add users to the group

Add a user to a user group. Try not to use it directly (unless it really belongs to only one group):

usermod -G groupA username

Doing this will remove you from the other groups and make you a member of groupA only.

Should be used with -a option:

usermod -a -G groupA username

To view the groups to which a user belongs, use the command

groups username

Summarize

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