Shulou(Shulou.com)06/01 Report--

I. users and groups

1. Add and delete users (and assign to groups)

Useradd-g preferred-G supplement username

-g login preferred group

-G other supplementary groups

Username user name

two。 Add delete group

Groupadd groupnamegroupmod-n newgroupname (switch to new group name) groupdel groupname

3. View the group status of a user

Id userid root

4. Change the user's group

Usermod-g privategroup-G supplement username (existing user)

Second, the directory authority part

Users (and groups) who change the directory

Chown-R oracle:oinstall / test

-R recursively to the directory

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