What if the .gitignore file modified by git does not take effect?

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problem

The git modification of the .gitignore file does not take effect, and the files you want to ignore can never be ignored.

Reason

The reason is that .gitignore can only ignore files that were not originally track, and if some files have been included in version management, modifying .gitignore is invalid. The solution is to delete the local cache (change it to a non-track state) and then commit it.

Solve

Delete the local cache and change the files or folders that do not want to be versioned to an untrack state.

Cancel the version management of folders: git rm-- cached-r folder name

Cancel the version management of the folder: git rm-- cached file name

Modify the .gitignore file, modify the ignore rule

Add change git add-A

Commit changes to git commit-m'update .gitignore'

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