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

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

First of all, query the files or directories under the current directory

Ls / etc

The queried file list information is piped to grep, and the things in the / etc directory are matched and filtered through regular expressions.

Ls / etc | grep "^ [^ [: 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.

First create a new mytest1 directory under the / tmp directory with the mkdir command

Mkdir / tmp/mytest1

Copy a qualified file or directory to the target file through the cp command

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

View through the grep command

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

Convert the contents of the file through the tr command

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

Group-g 2019 distro

(2) create user mandriva, whose ID number is 1005; the basic group is distro

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

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

(5) delete mandriva, but keep its home directory

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

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

(8) add additional group admins for user slackware

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