User and group exercises

1, create user Gentoo, additional group is bin and root, the default shell is/BIN/CSH, the annotated message is "Gentoo istribution"

[Email protected] ~]# useradd gentoo-g bin,root-s/bin/csh-c "Gentoo istribution"

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2. Create the following user, group, and group memberships
Group with the name Admins

[Email protected] ~]# groupadd Admins

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User Natasha, using admins as a subordinate group
[Email protected] ~]# useradd natasha-g Admins
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User Harry, also use admins as a subordinate group

[Email protected] ~]# useradd harry-g Admins

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User Sarah, no interactive login system, and not a member of admins, Natasha,harry,sarah password is CentOS

[[email protected] ~]# useradd sarah-s/bin/nologin//non-interactive login system

[Email protected] ~]# echo "CentOS" | passwd--stdin Natasha//Add a password for CentOS
[Email protected] ~]# echo "CentOS" | passwd--stdin Harry//Add a password for CentOS
[Email protected] ~]# echo "CentOS" | passwd--stdin Sarah//Add a password for CentOS
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3, create testuser UID 1234, primary Group: Bin, Auxiliary Group: ROOT,FTP,SHELL:/BIN/CSH Home:/testdir/testuser

[Email protected] ~]# useradd testuser-u 1234-g bin-g root,ftp-s/bin/csh-d/testdir/testuser

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4, modify TestUser uid:4321, primary Group: root, Auxiliary Group: Nobody,loginname:test,home:/home/test Home Data migration
[Email protected] ~]# usermod testuser-u 4321-g root-g nobody-l test-d/home/test-m
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650) this.width=650; "title=" usermod.jpg "src=" http://s2.51cto.com/wyfs02/M01/85/4B/ Wkiol1efqg7a6bhiaaa2pxnbmus774.jpg-wh_500x0-wm_3-wmp_4-s_3852495750.jpg "alt=" Wkiol1efqg7a6bhiaaa2pxnbmus774.jpg-wh_50 "/>

5, Batch create account: User1...user10

1) First create a User.txt document format as follows:

Uid:3000-3009,shell:/bin/csh,home:/testdir/username

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Using the command: NewUsers and edit files

[Email protected] ~]# newusers user.txt

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Then create a new Passwd.txt document to write the password in format

Passwd:usernamepass

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650) this.width=650; "title=" passwd.jpg "src=" http://s4.51cto.com/wyfs02/M01/85/4C/ Wkiol1efrkydzfvaaaa5punmcq0291.jpg-wh_500x0-wm_3-wmp_4-s_1849588512.jpg "alt=" Wkiol1efrkydzfvaaaa5punmcq0291.jpg-wh_50 "/>

In use command: CHPASSWD import password

[email protected] ~]# Cat Passwd.txt | chpasswd

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It's not over yet, and you need to copy all the files under/etc/skel/to 10 users.

[[email protected] ~]# for TestDir in user{1..10};d o cp-rf/etc/skel/. [^.] */testdir/$testdir;d One

Note Home directory-related configuration, so that users log on normally

This article from the "Operation and maintenance of the Future" blog, declined reprint!

User and group exercises