Einstein labs

Einstein labs will involve writing Shell scripts for marks.

Homework

Before the first lab:

You will have "Exam mode" labs.

Guest login. No student-owned files.
No student.computing.dcu.ie.
You may not get out phones or other devices. Phones cannot be on desks. They must stay in coats or bags.
You may not bring any paper notes.
Limited to:
- Linux command-line.
- Manual pages.
- My notes. humphryscomputing.com
- Einstein upload page.
No other Internet.
You must do these physically in the labs. This is enforced by the software.
Each test will be revealed on the day, on the course home page.
Tutors supervise.
Silent labs. No talking.
Upload to Einstein for marks.
Time limited to the lab session.

For many of my scripts, it is good to have some data to practice on while debugging.
But you have access to this right?
```
 /users/tutors/mhumphrysdculab/share 
```
No you do not. In the lab exam you cannot access the student.computing file system.
So when you login to the lab exam, download this file: shakespeare.tar.gz

Then extract the files as follows:

gzip -d shakespeare.tar.gz
tar -xf shakespeare.tar

Now you have your own copy of the works of Shakespeare to practice "grep" and other commands on.

Debug them locally on Linux first.
Do not debug them on Einstein.
Naming:
- You must use the exact filenames I will give you.
- Scripts for Einstein must end in ".sh"
- Shell scripts in general do not need any extension. I never use an extension myself. The .sh here is an Einstein requirement.
Editing:
- You can edit with gedit (run in parallel to command line):
```
 gedit file.sh & 
```
- Or you can edit with nano (have to exit to go back to command line, or else make two command lines):
```
 nano file.sh 
```
Running:
- Since $HOME/bin is not set up on the lab exam logins, run your program (say it is called "file.sh") by typing:
```
 ./file.sh 
```
- Note that in a normal environment we can get rid of "./" and ".sh".
Uploading:
- When the script is debugged locally, upload it to Einstein for marks:
- Click on the upload section to select your file. Or drag and drop your file.
- Note the "einstein" upload script: einstein file.sh will not work for the lab exams.
Check how you did:
- You can have any number of attempts (within the lab time) to pass the tests.