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

How do you find the complexity of an algorithm, How do you get the complexi...

How do you get the complexity of an algorithm? What is the relation b/w the time & space complexities of an algorithm? Justify your answer with an example.

Python, interference of waves

interference of waves

C# not c++ programing help, Please write a program declaring a variable x a...

Please write a program declaring a variable x as the type int, and use the scanf function to input an integer to initialize the value of x. Then, your program will print the follow

Define an example of switch statement, Define an Example of Switch Statemen...

Define an Example of Switch Statement? estimate(number) int number; /* Estimate a number as none, one, two, several, many */ {       switch(number) { case 0 :

Lisp and Prolog, Is there one can help me in the language Lisp and Prolog

Is there one can help me in the language Lisp and Prolog

What is the switch statement, What is the switch Statement? This is a dif...

What is the switch Statement? This is a different form of the multi way decision that It is well structured, but can only be used in certain cases where: 1. Here, Only one var

Define a procedure which makes an avl tree with one node, (a) Define a proc...

(a) Define a procedure called make-avl-tree which makes an AVL tree with one node. Also create another constructor build-avl-tree that creates an AVL tree from a root, left subtree

Exception Handling in c++, Exception handling Exception handling is a mech...

Exception handling Exception handling is a mechanism that separates code that detects and handles exceptional circumstances from the rest of your program. Note that an exceptional

Database, How to create an ER diagram?

How to create an ER diagram?

We are looking for pool services software, We are looking for Pool Services...

We are looking for Pool Services Software Our company Pool Hands LLC is looking to build software for our internal use. We would like the software built therefore that it could

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