Git

Remove files that are listed in the .gitignore but still on the remote repository:

# Remove the file(s) that you want to untrack from .gitignore

# 1. Remove them with:
git rm --cached file1 file2 dir/file3

# Or, if you have a lot of files:
git rm --cached `git ls-files -i --exclude-from=.gitignore`

Here is the stackoverflow link for reference.

Quick way to create a branch and check it out in one line:

git checkout -b branch1

Split git commit into multiple commits:

Suppose you have a commit that README.md and file1.txt have changes, and you want to split the commit into one with just README.md and another with file1.txt.

# 1. Run interactive rebase
# Change `n` to appropriate number.
# For example, if the commit is located in the second from HEAD,
# then you would run `git rebase -i HEAD~2`
# If it's the very first commit, then `git rebase -i --root`.
git rebase -i HEAD~n

# 2. pick -> edit

# 3. git reset HEAD^

# 4. Add, commit, and continue with `git rebase --continue`.

# 5. Repeat until you are done splitting the commit.

# 6. Force push?

List tracked files:

git ls-files