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

Implement a lunar lander simulation, 1. Modify your solution to #8 so that ...

1. Modify your solution to #8 so that if an ellipse is touched by the mouse, it turns permanently green.Bonus (up to +5): a green ellipse stops moving, but recovers after 5 seconds

Perl program, Input to be in the form of a string of less than 256 characte...

Input to be in the form of a string of less than 256 characters. Assume that this character string (record) can only be of the form: Last Name, First Name, Box number, City, St

Java virtual machine, Expertsmind.com is expert in java assignment help ...

Expertsmind.com is expert in java assignment help JAVA Virtual Machine A Java exclusive device or java virtual machine (JVM) is an exclusive device able of undertaking Jav

and gate- or gate-logical-program , System.in and System.out should not be...

System.in and System.out should not be used anywhere in the programs except in main and only for testing purposes. All calculations should be done in a method. Note: To use J

Define the if - else statement - computer programming, Define the If - else...

Define the If - else statement - computer programming? The If - else statement The universal form of if - else statement is if(expression)

Solve the given initial value problem, Solve the following initial value pr...

Solve the following initial value problem y (3) - 5y'' - 22y' + 56 y= 0; y(0) = 1; y'(0) = -2; y''(0) = -4 Solution : r 3 - 5r 2 - 22r + 56 = (

Linear homogeneous differential equations, As with 2 nd order differential...

As with 2 nd order differential equations we can't determine a non-homogeneous differential equation unless we can initially solve the homogeneous differential equation. We'll als

C# xna game project, I need to finish my game project within two weeks usin...

I need to finish my game project within two weeks using XNA. Would you guys can help me to finish it? Thank you

Calculating percentage differences-circuit diagram, In the procedure sectio...

In the procedure section, it is important to have a clear circuit diagram with component values and a brief, but accurate description of each step taken. 1. Tables for both the

System calls, #questiWrite down different system calls for performing diffe...

#questiWrite down different system calls for performing different kinds of tasks.on..

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages