Question

Write a shell script to solve the following business problem. Create a file called whoislogin.out that contains the output of the who command, then append to the whois.out file, the output of the date and finger commands. Your script should prompt to pick any users from the list of users currently logged onto the system. Use the variable concept to search for the specific user from those displayed on the screen coming from the who is.out file created. Show a print screen of your solution and output. (psql)

Answer 1

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Code:
#!/bin/bash

# writing who command output to whoislogin.out
who > whoislogin.out

# writing date and finger commands output to whois.out
date > whois.out
finger >> whois.out

# appending contents of whoislogin.out to whois.out file
cat whoislogin.out >> whois.out

# asking the user want to search
echo "Enter the username you want to search? "
read usrname

# searching for the user in whois.out file
echo "'$usrname' available in logged in users are"
grep $usrname whois.out

Code output screenshot:

Unix Terminal> bash test.sh Enter the username you want to search? vishal 'vishal" available in logged in users are vishal grou vishal vishal console Apr 10 20:34 vishal ttys000 Apr 14 11:10 Unix Terminal> *con 3d Wed 20:34 Krishn Sun 11:10 Krishn rou s00