GIT - branches, what is branch? -

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i new git. want create new branch: have 3 files inside repository.

if create new branch, have copy files; or copied automatically if create new branch?

when want work on branch, have switch branch inside git, before start work (opening files)? thank help

i want create new branch

# checkout new branch based upon current branch  git checkout -b <new branch name>

if create new branch, have copy files; or copied automatically if create new branch?

the new branch full copy current branch.
in order understand why need know branch in git.

what branch in git?

a branch in git lightweight movable pointer commit.
here short , simple post it

in other words:

branch in git pointer commit.
can see in image below (taken post mentioned above), branches pointing commit b + delta added them.

when create branch git creates file , writing commit id file.

enter image description here

when want work on branch, have switch branch inside git, before start work (opening files)?

this what's checkout -b - switch new branch enter image description here


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