Question

Task 2.5: Write a script that will ask the user for to input a file name and then create the file and echo to the screen that the file name inputted had been created

1. Open a new file script creafile.sh using vi editor

# vi creafile.sh

2. Type the following lines

#!/bin/bash

echo ‘enter a file name: ‘

read FILENAME

touch $FILENAME

echo “$FILENAME has been created”

3. Add the execute permission

4. Run the script #./creafile.sh

5. Enter the file name you want to create

6. Check whether file is created

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Task 3.4 Challenge Exercises

a.Write Script to see current date, time, username, and current directory.

b.Take the script from Task 2.5 and write it so it does not create a file if no input is received.

c. In this exercise, you will create a script based on case statement.

d. Write a Shell using for loop to print three strings.

e. Write a bash Script to reverse a given positive integer.

Answer 1

Task 2.4
***********

#!/bin/bash

echo 'enter a file name: '
read FILENAME
touch $FILENAME
echo "$FILENAME has been created"

Task 3.5
**********

#!/bin/bash
i=0
while [ $i -ne 5 ]
do

echo "1.Write Script to see current date, time, username, and current directory"
echo "2.Take the script from Task 2.5 and write it so it does not create a file if no input is received."
echo "3. Write a Shell using for loop to print three strings."
echo "4. Write a bash Script to reverse a given positive integer."
echo "5. exit"

echo "Enter Your choice: "
read INPUT_STRING

case $INPUT_STRING in
   1)
       echo "Current Date/Time is: " `date`
       echo "Current user is: " `whoami`
       echo "Current directory is: " `pwd`
       ;;
   2)
       echo 'enter a file name: '
       read FILENAME
       if [ -z "$FILENAME" ]
       then
           echo "you have not provided any file name"
           exit
       else
       touch $FILENAME
       echo "$FILENAME has been created"
       fi
       ;;
   3)
       echo "For loop to print string 3 times:"
       for ((a=0;a<3;a++))
       {
           echo "Hello World..."
       }
       ;;
   4)
       read -p "Enter a number to reverse: " num
       echo $num | rev
       ;;
   5)
       echo "Bye"
       i=5;
       exit
       ;;
   *)
       echo "Sorry, I don't understand"
       ;;
esac
done

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