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

Calculate the total price to purchase all the components req, Calculate the...

Calculate the total price to purchase all the components required to build a state-of-the-art gaming computer from components available on the internet. Before attempting this exer

Write the vhdl code for traffic light controller, The schematic of the traf...

The schematic of the traffic light controller is as shown in figure 1. There are three control buttons on the panel: HAZ (Hazard), LT (Left) and RT (Right). Whenever, HAZ is clicke

Capital gain calculator, This assignment is divided into two parts. The goa...

This assignment is divided into two parts. The goal is to write a Java program that calculates capital gain on a stock market, see Lab 7. When a share of common stock of some co

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

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

Java exception handling, Expertsmind brings you unique solution in java as...

Expertsmind brings you unique solution in java assignments Exception Handling An exception is an issue that appears during the performance of an application. An exception

Develop a windows forms application, Develop a Windows Forms Application by...

Develop a Windows Forms Application by creating a new project named "xxxxxxxx" in a new folder named "xxxxxxxxas3" where xxxxxxxx is your student id. You should delete file(s) with

Prepare notes on the logical storage manager, Question: (i) Prepare bri...

Question: (i) Prepare brief notes on the Logical Storage Manager. (ii) Show benefits that can be achieve by using the LSM Manager. (iii) LSM organizes and optimizes disk

Write a program to check whether a car will crash or not, Write a program t...

Write a program to check whether a car will crash. There is an obstacle at a certain distance (say 100 m) and the car is travelling at a certain speed (try it with some different s

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