1. Click LAB 4 invitation link posted on BB (Lab Submissions) to accept the assignment
2. Use 'git clone' to copy the lab4 repository to your local machine (any Linux, or even Matrix).
3. Complete all steps as you see on the Wiki.
4. Use the check script to verify your work.
5. Use 'git add lab4*' to add your lab scripts to the repo.
6. Use 'git commit -m "Adding Lab files altogether"' (or any custom message) to commit your work.
7. Use 'git push' to upload your work to GitHub.