Question

There is a file called responses that contains pre-typed answers to all the prompts shown by an executable called script. What should you type to use the file as input for the executable? Assume that the script takes no command line parameters.

Answer 1

To use the file 'responses' as input for the executable 'script', you should use the shell command './script < responses'. This redirects the content of the file to the executable as standard input.

Step-by-step explanation:

To use a file called responses as input for an executable called script, you would use redirection in the command line shell. Redirection can be performed by using the '<' symbol before the name of the file that contains the pre-typed answers. For example, the command you would type into the shell would be:

./script < responses

This will redirect the contents of the file 'responses' to be the standard input for the 'script' executable. It is assumed that the 'script' executable takes input from the standard input stream commonly referred to as stdin, which is normally connected to the keyboard. The 'responses' file replaces this input with the contents of the file, emulating manual entry.

This command will take the content of the 'responses' file and provide it as input to the 'script' executable. The prompt responses in the file will be processed by the script accordingly.