If you read the README carefully, you will notice that the shell program has a "interactive" mode as well as a "batch" mode. All the tests will run in the batch mode.

You can check argc to determine which mode to use in your program. In the interactive mode, your skeleton program shall echo out the lines of the user input

prompt$>./$wish

wish$>$ this is a command

line$1$: this is a command

wish$>$ this is another command

line$2$: this is another command

If the batch.txt contains the following lines:

this is a command

this is another command

The batch mode will echo the file content line by line:

prompt$>./$wish batch.txt

line$1$: this is a command

line$2$: this is another command

Write a c program basic shell with these basic functionalities to produce the same output