Write a collection of shell scripts that test the various implementations of the calculator program. All of this should be done on your Linux system, and will later be submitted to GitLab. We have ways of knowing if you do not use Linux to write these tests. You may write as many scripts as you like, and may give them whatever names you like $($though we recommend intuitive names that say something about what the script checks$).$ Each script must work in the same way as basic arithmetic.sh: The script can be run at the command line with no arguments. The script may assume that the calc program has been compiled, is in the current directory, and isnamed calc. The script should test calc in some way by running it and checking its output. The script should communicate a successful test by returning $0,$ and a failed test by returning something other than zero. When a test fails, it is helpful to print something that describes the error. The script must be stored in the tests directory