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Git Kata: Basic revert

Setup:

  1. Run source setup.sh (or .\setup.ps1 in PowerShell)

The task

In this task a few changes snuck in, that we'd like to get out. Our history is public, so we can't just change it. Rather we need to use revert to remove the unwanted changes in a safe way.

  1. Use git log --oneline to look at the history
  2. Use cat to view the content of greeting.txt
  3. Use git revert on the newest commit, to remove the changes the last commit added
  4. Use git log --oneline to view the history
  5. Did the revert command add or remove a commit?
  6. Use cat to view the content of greeting.txt
  7. Use ls to see the content of the workspace
  8. Use git log --oneline to find the sha of the commit adding credentials to the repository
  9. Use git revert to revert the commit that added the credentials
  10. Use git log --oneline to view the history
  11. Use ls to see the content of the workspace
  12. How many commits were added or changed by the last revert?
  13. Use git show with the sha of the commit you reverted to see that the credentials file is stilll in the history
  14. As you have now reverted the credentials file, so it is removed from your working directory, is it also removed from git?

Useful commands

  • git revert <ref>
  • git log --oneline
  • git show <ref>