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`

if test $usr = $w

then

echo "User is logged in.."

flag=1

done

if test $flag = 0

then

echo "User is Not logged in.."

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

Fortran function for find and print out all prime number, Write a Fortran L...

Write a Fortran LOGICAL FUNCTION, called "is_prime", which determines if a given integer value is a prime number or not (A prime number is a natural number which has only two disti

Laplace transforms, There actually isn't all that much to this section. All...

There actually isn't all that much to this section. All we are going to do now is work a quick illustration using Laplace transforms for a 3 rd order differential equation therefo

Memory hierarchy for linux systems, Memory Hierarchy for Linux Systems ...

Memory Hierarchy for Linux Systems A cache line has one or more valid bit(s), tag entry and list of bytes in a block in one set of a cache, as shown below: If you were

Series solutions - higher order differential equations, The idea of this se...

The idea of this section is not to do anything new along with a series solution problem. Instead this is here to exemplify that moving in a higher order differential equation does

Develop a context diagram and use case diagram, Develop (i) a context diagr...

Develop (i) a context diagram and (ii) a use case diagram to model the following functionalities of NetFlix. Netflix is an online video/DVD renting company. A customer desiring

Function to check whether a certain ingredient is on pizza, Carnivorous Car...

Carnivorous Carla only eats pizza if it has at least three of the following ingredients: ham, pepperoni, salami, italian sausage, bacon. You have the function contains() to check w

Prolog assignment, I have constantly been emailing to get the task i had pa...

I have constantly been emailing to get the task i had paid for to be done correctly but no replies from anyone. Not even one acknowledging my emails. Been phoning all the way from

Sytem call, use of exec and nice system call

use of exec and nice system call

Shell script toconvert all lowercase to uppercase characters, Normal 0 ...

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

Java, program take integer from user and print in alphabets

program take integer from user and print in alphabets

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages