How to set bashrc to check a command before execution?

Question

I want to set .bashrc to check a specified command and ask for confirmation before execution.

For example, I want to set command 'rm' in .bashrc to receive a question before execution started otherwise being terminated.

read -p "Type password? " pass
if [ "$pass" = "1234" ]; then
  // do the execution
else
  // Termination and echo a message wrong pass. 
fi

Example:

> rm MyFile.txt
 Type password? ****
You have successfully removed MyFile.txt
>

Answer 1

You can define an alias or a function which will take precedence over the binary looked up from $PATH when resolving rm :

rm() {
    read -p "Type password? " pass
    if [ "$pass" = "1234" ]; then
         command rm "$@"
    else
         #Termination and echo a message wrong pass. 
    fi
}

Note that this doesn't constitute a reasonable security measure as it is very easily avoided by using command rm, \rm or the path to the rm binary (usually /bin/rm) instead of calling rm.