"Hello World"

 Become familiar with RePy.

This assignment is meant to help you become familiar with RePy, how to run RePy programs and understand the basic functionality of RePy. This will be helpful for when you start Part 1 and 2 of the main lab assignments. 

 

In this assignment we are going to work with an existing text file that contains Sarah Josepha Hale's poem 'Mary had a little lamb'. We will be reading the file, outputting specific characters from the file, changing a word in the file, and appending to the file. 

 

Open up the ISBUbuntu VM and navigate to the RUNNABLE folder within repy_v2 (awesomestudent@awesomestudent-ISP:~/repy_v2/RUNNABLE$ ). There is a file there called story.txt, open it and take a read. When done, close the file.

There is a file named "gettingstartedmonitor.r2py", feel free to open it and take a look. This is a bare-bones function pass-through reference monitor, it has no real security features and is only to be used for this specific assignment. A deeper look into a reference monitor that you will be working on happens in the Programming Lab Part 1 assignment.

 

You can also find a file named "myapplication.r2py", this is the file you will be working with, open it. The default text editor will suffice for this assignment, and to be honest the other assignments as well although vscode has been installed on the virtual machine and might offer an easier platform.

Right now the program will not work because M,P,PPP,Q,R,S,T,U,V,W,X,Y,Z are just placeholders for you to insert code.

If you open up story.txt after the program has run, it should look like this:

aw Recent Starred Home Desktop Documents Downloads Music Pictures B Videos Trash + Other Locations Name Home Desktop story.txt e strace.py etab_completer.py tcprelayaffix.r2py tcp_relay_common_lib.r2py tcp_time.r2py testfile.txt testfile.txt.b e testportfiller.py e textops.py time.r2py time_interface.r2py e tracebackrepy.py =udpcentralizedadvertise.r2py uniqueid.r2py urllib.r2py urlparse.r2py e virtual_namespace.py win_cpu_nanny.py RUNNABLE e windows_api.py Open 1 Mary had a little lamb, 2 Its fleece was white as snow; 3 And everywhere that Mary went story.txt -/Desktop/RUNNABLE 4 The lamb was sure to go. 5 It followed her to school one day, 6 which was against the rule; 7 It made the children laugh and play 8 To see a lamb at school. 9 And so the teacher turned it out, 10 But still it lingered near, 11 And watted patiently about 12 Till Mary did appear. 13 Why does the lamb love Mary so? 14 The eager children cry; 15 Why, Mary loves the lamb, you know, 16 The teacher did reply. Plain Text - a Tab Width: 8 88 Size 7.6 kB 9.4 kB Save = Modified Star 22 Sep 2020 22 Sep 2020 Ln 9, Col 34 INS "story.txt" selected (459 bytes)