Shulou(Shulou.com)06/03 Report--

Today, the editor will bring you an article about the permissions of Linux groups and users. The editor thinks it is very practical, so I will share it for you as a reference. Let's follow the editor and have a look.

1. Display / etc directory, starting with a non-letter, followed by a letter and other files or directories of any length and any character.

Ls / etc/ [^ [: alpha:]] [[: alpha:]]

2. Copy all files or directories that begin with p and end with non-numbers under the / etc directory to the / tmp/mytest1 directory.

Cp-r / etc/p [^ [: digit:]] / tmp/mytest1

3. Convert the contents of the / etc/issue file to uppercase and save to the / tmp/issue.out file.

Cat / etc/issue | tr "amurz"Amurz" > / tmp/issue.out

4. Summarize and describe how to use user and group management commands and complete the following exercises:

(1) create a group distro with a GID of 2019

Groupadd-g 2019 distro

(2) create a user mandriva with an ID of 1005 and a basic group of distro

Useradd-u 1005 mandriva-g distro

(3) create user mageia, whose ID number is 1100 and home directory is / home/linux

Mkdir / home/linux/

Useradd-u 1100 mageia-d / home/linux/

(4) add a password to the user mageia, the password is mageedu, and set the user password to expire after 7 days.

Passwd mageia

Enter password: mageedu

Chage-M 7 mageia

Chage-l mageia: view the modified result

(5) delete mandriva, but keep its home directory.

Userdel mandriva

(6) create user slackware, whose ID number is 2002, basic group is distro, and additional group peguin

Groupadd peguin

Useradd-u 2002 slackware-g distro-G peguin

(7) modify the default shell of slackware to / bin/tcsh

Usermod-s / bin/tcsh slackware

(8) add additional group admins for user slackware

Groupadd / admins

Usermod-a-G admins slackware

These are the details of the permissions of the Linux group and users. have you gained anything after reading it? If you want to know more about it, you are welcome to follow the industry information!

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