Shell script to check whether user has logged in or not, Programming Languages

Assignment Help:

W.A.S.S to check whether user has logged in or not.

 

Program

 

# W.A.S.S to check whether user has logged in or not.

 

echo "Enter the user name:"

read usr

flag=0

for w in ` who | tr -s " " | cut -d " " -f1`

do

if test $usr = $w

then

echo "User is logged in.."

flag=1

fi

done

 

if test $flag = 0

then

            echo "User is Not logged in.."

fi

 

Output:

 

Enter the user name:

root

User is logged in..

 

Enter the user name:

narenda

             User is Not logged in


Related Discussions:- Shell script to check whether user has logged in or not

Program compares interest rates, 'This program compares interest rates betw...

'This program compares interest rates between two banks and determines the best bank 'Eric Weber, Adam Litchfield, Eric Romero, Sarah, Alex, Amy '10/5/12 'Lab #4 Problem 42 'CSC

Shell script for to change & display system prompt and path, Normal 0 ...

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Prolog predicate to remove nth element, Write a Prolog predicate remove_nth...

Write a Prolog predicate remove_nth(N,L1,L2) that is true if list L2 is just list L1 with its Nth element removed. If L1 does not have an Nth element then the predicate should fail

Simple corba program, You are working in charge of a group of programmers a...

You are working in charge of a group of programmers at a software company. Your task is to assess and research CORBA and to produce a report to be given to the programmers detailin

Design an application that opens and analyses word files, Design an applica...

Design an application that opens and analyses word files. Requirements: Create an application that analyses text documents. It should open a text file, read each word in

Explain the goto statement - computer programming, Explain the Goto Stateme...

Explain the Goto Statement - Computer Programming? The goto statement is employed to alter the normal sequence of program execution by transferring control to some other part o

Write a program that lets the user play an adventure game, Let the player (...

Let the player (denoted U in the diagram below) navigate around the board until she wins the game by finding the exit or is killed by a monster. A player begins the game with a sli

Matlab, ,how to write matlab program for fast decoupled method

,how to write matlab program for fast decoupled method

How to create an html document?, An HTML document may be created via any HT...

An HTML document may be created via any HTML editor or text editor such as notepad etc.

Write a recursive procedure that computes number in integer, (a) Write a re...

(a) Write a recursive procedure (digits n) that computes the number of digits in the integer n using a linear recursive process. For example, (digits 42) should return 2 and (digit

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd