Write necessary bash code to continuously display the main menu that contains the following tasks:UserGroupFileProcessExit upon choosing one of the first 3 options, a sub-menu is displayed.File Menu: count words of a filecount characters of a filecompute word average length by dividing the number of characters by the number of words in a file.count lines of a filedisplay a set of rows from the beginning of a file.change permission for a file (for the owner, group, and others with rwx permissions both ways symbolic and numeric)Return to a previous menu User Menu: Create a new userdelete a userchange the passwordadd a user to a groupdelete a user from a grouplist who is currently logged inchange the permission of a userlist groups of a userBlock a userCount the number of users in the system.Generate a strong random password for a user.Return to the previous menu Group Menu: Add a groupdelete a groupList groupsAdd a user to a groupdelete a user from a grouplist members of a groupReturn to a previous menu Process Menu: (values of each command are read from the keyboard)Run a program in the foregroundRun a program in the background.Run a program with a specific priority.Change the priority of a program (process).Kill a program (process).display the status of some program (process).Create a periodic process by setting its related times (minutes, hours, day of week, day of month, month).return to the previous menu.

#!/bin/bashwhile true; do # Display menu echo -e "1- User\n2- Group\n3- File\n4- Exit\n"…

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Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Write necessary bash code to continuously display the main menu that contains the following tasks:

User
Group
File
Process
Exit

upon choosing one of the first 3 options, a sub-menu is displayed.

File Menu:

count words of a file
count characters of a file
compute word average length by dividing the number of characters by the number of words in a file.
count lines of a file
display a set of rows from the beginning of a file.
change permission for a file (for the owner, group, and others with rwx permissions both ways symbolic and numeric)
Return to a previous menu

User Menu:

Create a new user
delete a user
change the password
add a user to a group
delete a user from a group
list who is currently logged in
change the permission of a user
list groups of a user
Block a user
Count the number of users in the system.
Generate a strong random password for a user.
Return to the previous menu

Group Menu:

Add a group
delete a group
List groups
Add a user to a group
delete a user from a group
list members of a group
Return to a previous menu

Process Menu: (values of each command are read from the keyboard)

Run a program in the foreground
Run a program in the background.
Run a program with a specific priority.
Change the priority of a program (process).
Kill a program (process).
display the status of some program (process).
Create a periodic process by setting its related times (minutes, hours, day of week, day of month, month).
return to the previous menu.

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