Question

In LINUX

Q1

A) Create a user with name “user1” from root directory.

B) Change “user1” shell to “/bin/bash” from root directory.

C) Delete the user “user1” from root directory.

D) Set a password for “user2” from local user directory.

E) Add “user2” to group “java”.

Q2: Write a menu script that has 3 option:

a) Option 1: list all file in current directory.

b) Option 2: ask user enter a number n, and print 1 to n to screen

c) Option 3: exit.

Answer 1

1)

sudo useradd user1
[enter your password]
sudo su
[enter your password]
userdel user1

useradd user2

passwd user2
[enter new password]

usermod -a -G java user2

2)

menu_script.sh:

printf "`echo "Enter option: " `"
#prompt for option
read ch
#get input into ch
case $ch in
1)    ls;;
     
2)    printf "`echo "Enter a number n: " `"
       #prompt for a number
       read n  
       #get input into n
       i=1
       while [ $i -le $n ]
       do
       echo $i
       i=$(($i+1))
       done;;
3)    echo "Terminating..."
       exit;;
  
esac

Output:

shyam@shyam:~$ sudo useradd user1 [sudo] password for shyam: shyam@shyam:~$ sudo su root@shyam:/home/shyam# userdel user1 root@shyam:/home/shyam# useradd user2 root@shyam:/home/shyam# passwd user2 Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully root@shyam:/home/shyam# usermod -a -G java user2 root@shyam:/home/shyam# |

shyam@shyam:~/Documents/HomeworkLib/linux$ chmod +x_menu_script.sh

shyam@shyam:~/Documents/HomeworkLib/linux$ ./menu_script.sh Enter option: 1 jane_research lab3.sh looper minor1.sh sorted_orders test.inp traceroute_script2.sh traceroute_script.sh customers progTTL.sh ex7.sh file1.txt newFile.txt report orders script_1.sh script_2.sh sorted_customers 5 awkprof.out customerOrders input shyam@shyam:~/Documents/HomeworkLib/linux$ ./menu_script.sh Enter option: 2 Enter a number n: 10 flights.txt looper2 output menu_script.sh prime.sh 2 3 4 5 10 shyam@shyam:~/Documents/HomeworkLib/linux$ ./menu_script.sh Enter option: 3 Terminating... shyam@shyam:~/Documents/HomeworkLib/linux$ |