Question

In many versions of unix there is an -i option for rm so that you will be prompted for confirmation if you are about to delete a file. Write a script called rmi which will prompt without using the -i argument

Answer 1

Below given is a shell script with name rmi.sh

• Program reads a file name a command line arguments and checks whether the file with given name exis or not.
• If exists, it will ask to delete the file
• If the answer is yes, it will delete the file with the given name and writes the message
• If the answer is no, It will not delete the file and writes the message
• If the file not exist, it will write the message of file doesnot exist

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#!/bin/bash
##below statement takes the filename from commandline
filename=$1
## below if loop checks whether the file with the given name exists or not
if [[ -f $filename ]];
then
## below line prompts for asking to delete the given file or not and reads the answer to the variable ans
read -p "Do you want to delete the file $filename ? [y/n]" ans
## below if loop checks whether the want to remove the file or not
if [[ $ans == [yY] ]];
then
## this portion deletes the file with the given name if answer is Y/y and print the message
rm "$filename"
echo "$filename deleted"
else
echo "$filename not deleted"
fi
else
##if the given file not exist, it will print the message
echo "$filename does not exist"
fi

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Output of the program is shown below