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What to do after .gitignore file updated?

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After creating a .gitignore file in your repository and setting patterns to match files which you do not want Git to track, Git starts tracking repository files and respecting the patterns set in the .gitignore file after you run the git add command (For example git add .).

The problem is that if we later make some changes to the .gitignore file and then just run the git add command again, the changes made in the .gitignore file will not take effect.

For example if you later set in the .gitignore file that you want Git to start tracking a file which you previously set to be ignored, the file will still be untracked if you just run the git add . command.

This is because, the git cache needs to be cleared. I usually just do this with the git rm -r --cached . then after I run the git add . command to apply the .gitignore changes.

Things to note to do when making changes to .gitignore file

Here are just some points to note when making changes to the .gitgnore file to ensure Git is always tracking the right files.

  1. Make changes in .gitignore file.
  2. Run git rm -r --cached . command.
  3. Run git add . command
  4. git commit -m "Commit message" or just git commit or continue working.

What is really important here is step 2. And remember to just run git add . command before doing any commit.

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