DevOps Classroom Series – 04/Feb/2021

Git Contd..

Terms

• Repository: In short repository is totality of the history of your software project.

Practical Scenarios

• Create a local repository
  • Create any empty folder
  • Open this folder in any terminal (Powershell, Git Bash)
  • Now initialize the repository by executing git init
  • When we initialize the repository a .git folder is generated
• Three areas in git on your local system
• Now lets make changes in working tree
  • Create a file in working tree
  • Now lets ask git what is the status by executing git status
  • Understanding add and commit
  • Now lets add the change of working tree to index area
  • Now lets commit the changes to local repo. But before we commit the changes, commit needs
    • email id
    • username
    • message
  • Email id and username can be configure once per system, let do it
  • Message is given for every commit git commit -m <message of commit>
  • Now lets commit our change from index area to local repository
  • We had commited the changes from working tree to local repo via index area (staging area). Now lets see what the git status is
  • Now lets see the history of the repository by executing git log
• Now lets make one more change by adding some text to Readme.md
• Lets see what git status tells
• Now lets add this change to indexing/staging area
• Now lets commit the change from staging area to local repo
• In GIT, Head is pointer to commit id. By default HEAD points to the latest commit. We can also travel back to older commits
• Note: Try using any cheatsheat of your choice to get used to commands Refer Here
• In Git to make changes we move the changes from one phase to other, So we might see some of documents referring git as phased commit.
• So now lets make some more changes by create two empty folders in working tree
• Now lets execute git status
• For git, changes are considered at file level, empty folders are not considered as changes in git.