informationthe reference id of the commit and the message recorded for the commit the second commit to see the real power of version controlwe need to make change to the project and commit that change here we'll just add another line to hello_world pyhello_world py print("hello git world!"print("hello everyone "if we check the status of the projectwe'll see that git has noticed the file that changedgit_practicegit status on branch master changes not staged for commit(use "git add to update what will be committed(use "git checkout -to discard changes in working directoryv modifiedhello_world py no changes added to commit (use "git addand/or "git commit - "git_practicewe see the branch we're working on uthe name of the file that was modified vand that no changes have been committed let' commit the change and check the status againu git_practicegit commit -am "extended greeting [master eextended greeting file changed insertion(+ git_practicegit status on branch master nothing to commitworking directory clean git_practicegit log --pretty=oneline cb cff bd ab ed extended greeting be dbc ff be fd started project git_practicewe make new commitpassing the -am flag when we use the command git commit the - flag tells git to add all modified files in the repository to the current commit (if you create any new files between commitssimply reissue the git add command to include the new files in the repository the - flag tells git to record message in the log for this commit when we check the status of the projectwe see that we once again have clean working directory finallywe see the two commits in the log appendix