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

Explain the various tools for software implementation, Problem 1. What ...

Problem 1. What are the potential advantages of treating two related classes as subclasses of some superclass? 2. Explain the various tools for software implementation 3.

Shell script to delete all files from system have size zero, Normal 0 ...

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

Programming logic???, write c++ source code to find the number of digits i...

write c++ source code to find the number of digits in a given integer? pls ans

Super ascii string cost in c++, Ask question #Minimum 100 A string S is sai...

Ask question #Minimum 100 A string S is said to be "Super ASCII", if it contains the character frequency equal to their ascii values. String will contain only lower case alphabets

Java, Write a program that repeatedly prompts for and reads a positive inte...

Write a program that repeatedly prompts for and reads a positive integer value n and then calculates and displays the nth Fibonacci number

Java source code classes and objects, Design and implement a stringed music...

Design and implement a stringed musical instrument class using the following guidelines: a. Data fields for your instrument should include number of strings, an array of stri

I have to create three batch files, I have to create a bank atm machine usi...

I have to create a bank atm machine using MS-DOS. I am struggling to create LIST ALL ACCOUNTS ROLL-BACK TRANSACTIONS ACCESS AN ACCOUNT

Namererror, how do u define a letter in python "NameError: name ''r'' is n...

how do u define a letter in python "NameError: name ''r'' is not defined"

Java project, NOTE: You will only submit the University.java and EmptyFileE...

NOTE: You will only submit the University.java and EmptyFileException.java files (inside P3.zip/tar) NOTE on null objects:. From Project 1: Since the array of students in the Cou

Matlab help, i(t)=(V/R) * (1-e^-(R/L)(t)) (a) Defi ne an anonymous function...

i(t)=(V/R) * (1-e^-(R/L)(t)) (a) Defi ne an anonymous function answerE that returns i(t) given input t. (b) The fi nal value for the current is 2 amps. Find a time tm when the curr

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