Write a shell script. to remove files having following properties…(i) Remove all files having exactly 3 characters. (ii) Remove all files having specified extension. (iii) Remove all files having Name starting with lower case letters and ending with digits.

SOURCE CODE:

echo “1: File having only 3 char."

echo “2: File having specified extension.”

echo “3: File having name starting with lower case letters and ends at digits.”

echo “Enter your choice:”

read c

if [ $c = 1 ]

then

     echo “Files are…”

     ls ???

     echo “Do you want to delete these files?y/n”

     read s

     if [ $s = ‘y’ ]

     then

           for file in `ls ??? `

           do

                rm $file

           done

     else

           break

     fi

fi

if [ $c = 3 ]

then

     echo “Files are…”

     ls [ a-z ] * [0-9]

     echo “Do you want to delete these files?y/n”

     read s

     if [ $s = ‘y’ ]

     then

           for file in `ls [ a-z ] * [0-9] `

           do

                rm $file

           done

     else

           break

     fi

fi

if [ $c = 2 ]

then

     echo “Enter the special extension of file”

     read e

     echo “Files are…”

     ls *.$e

     echo “Do you want to delete these files?y/n”

     read s

     if [ $s = ‘y’ ]

     then

           for file in `ls * $e`

           do

                rm $file

           done

     else

           break

     fi

fi

OUTPUT:

1: File having only 3 char.

2: File having specified extension.

3: File having name starting with lower case letters and ends at digits.

Enter your choice:

3

Files are...

Desktop

Documents

Downloads

Music

Pictures

Public

Videos

Do you want to delete these files?y/n

n