General instructions

$1.$ The approach of solving the Problem solely depends on the Candidate

$2.$ Make sure to have Draw.io diagrams for the workflowns and application architecture

$3.$ Every configuration, code written should be pushed on git $($Private Repo$)$

$4.$ Your are not permitted to share the doc with anyone, even with your colleagues

Scenario There is a customer who came to you with a problem to have a custom linux

command for his operations. Your task is to understand the problem and create a linux

command via bash script as per the instructions.

Command name $-$ internsctl

Command version $-$ v$0\mathrm{.}1\mathrm{.}0$

Section A

$1.$ I want a manual page of command so that I can see the full documentation of the command.

For example if you execute the command

man ls

as output we get the doc and usage guidelines. Similarly if I execute man internsctl I want

to see the manual of my command.

$2.$ Each linux command has an option $--$help which helps the end user to understand the use

cases via examples. Similarly if I execute internsctl $--$help it should provide me the

necessary help

$3.$ I want to see version of my command by executing

internsctl $--$version

Section B

I want to execute the following command for $-$

Part$1|$ Level Easy

I want to get cpu information of my server through the following command:

$ internsctl cpu getinfo

Expected Output $-$

I want similar output as we get from lscpu command

$---$

I want to get memory information of my server through the following command:

$ internsctl memory getinfo

Expected Output

I want similar output as we get from free command

Part$2|$ Level Intermediate

I want to create a new user on my server through the following command:

$ internsctl user create

Note $-$ above command should create user who can login to linux system and access his home

directory

$---$

I want to list all the regular users present on my server through the following command:

$ internsctl user list

$---$

If want to list all the users with sudo permissions on my server through the following command:

$ internsctl user list $--$sudo$-$only

Part$3|$ Advanced Level

By executing below command I want to get some information about a file

$ internsctl file getinfo

Expected Output $[$make sure to have the output in following format only$]$

xenonstack@xsd$-034$:~$ internsctl file getinfo hello.txt

File: hellot.txt

Access: $-$rw$-$r$--$r$--$

Size$($B$)$: $5448$

Owner: xenonstack

Modify: $2020-10-0720$:$34$:$44\mathrm{.}616123431+0530$

In case I want only specific information then I must have a provision to use options

$ internsctl file getinfo $[$options$]$

$--$size, $-$s to print size

$--$permissions, $-$p print file permissions

$--$owner, o print file owner

$--$last$-$modified, m

Expected Output with options

If I want to obtain the size of the specified file only, I should be able to use the following

command:

xenonstack@xsd$-034$:~$ internsctl file getinfo $--$size hello.txt

$5448$

If I want to obtain the permissions of the specified file only, I should be able to use the following

command:

xenonstack@xsd$-034$:~$ internsctl file getinfo $--$permissions hello.txt

$-$rw$-$r$--$r$--$

If I want to obtain the owner of the specified file only, I should be able to use the following

command:

xenonstack@xsd$-034$:~$ internsctl file getinfo $--$owner hello.txt

xenonstack

If I want to obtain the last modified time of the specified file only, I should be able to use the

following command:

xenonstack@xsd$-034$:~$ internsctl file getinfo $--$last$-$modified hello.txt

$2020-10-0720$:$34$:$44\mathrm{.}616123431+0530$