what is a gitignore file code example

Example 1: git add gitignore

$ touch .gitignore

Example 2: how to use gitignore to ignore a folder

You can ignore entire directories, just by including their paths and putting a / on the end:

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node_modules/
logs/

Example 3: git exclude folder

directory_to_exclude/

Example 4: how to git ignore a file

git config --global core.excludesfile ~/.gitignore_global

Example 5: what is add.gitignore

The purpose of gitignore files is to ensure that certain files not tracked by git remain untracked.