Redhat Shell Scripting Exercises

Create a script

Create a script named/root/foo.sh on SYSTEM1 to provide the following features:

1. When running/root/foo.sh Redhat, the output is Fedora

2. When running/root/foo.sh fedora, output is Redhat

3. When no parameters or parameters are not redhat or fedora, the error output produces the following information:/root/foo.sh Redhat:fedora

Vim foo.sh

#!/bin/bash

Case $ in

Redhat

echo Fedora

;;

Fedora

Echo Redhat

;;

*)

Echo ' root/foo.sh Redhat:fedora '

;;

Esac

chmod +x foo.sh

./foo.sh Redhat

./foo.sh Fedora

./foo.sh 1

17. Create a script to add users

Create a script on system1, called/root/mkusers, that enables the creation of local Users for system SYSTEM1, and the user names of those users come from a file that contains a list of user names, while meeting the following requirements:

1. This script requires a parameter that is the file containing the list of user names

2. If no parameters are provided, this script should give the following message Usage:/root/mkusers then exit and return the corresponding value

3. If a nonexistent file name is provided, this script should give the following hint, input file not found and then exit and return the corresponding value

4. Created user login shell for/bin/false

5. This script does not need to set a password for the user

6. You can get the user name list as a test Http://rhgls from the URL below. Domain11.example.com/materials/userlist

Vim mkusers.sh

#! /bin/bash

If [$#-eq 0];then

Echo ' Usage:/root/mkusers '

Exit 1

Fi

if [!-F $]; Then

Echo ' Input file not found '

Exit 2

Fi

While Read line

Do

Useradd-s/bin/false $line

Done < $

chmod +x mkusers.sh

Create a userlist on your own, one user test on a single line

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Redhat Shell Scripting Exercises