Teleportation to Parallel Universes and Back Again with Git

$ cd ~/Scratch

$ mkdir gittest

$ cd gittest

$ touch hello1.txt

$ git init
Initialized empty Git repository in /Users/jeet/Scratch/gittest/.git/

$ git add .

$ git commit -m "added hello.txt in master branch"
Created initial commit a1e2587: added hello.txt in master branch
 0 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 hello1.txt

$ ls -l
total 0
-rw-r--r--  1 jeet  staff  0 Oct  3 22:52 hello1.txt

$ git checkout -b alpha
Switched to a new branch "alpha"

$ touch hello-alpha.txt

$ git add .

$ git commit -m "added hello-alpha.txt in alpha branch"
Created commit a81cb10: added hello-alpha.txt in alpha branch
 0 files changed, 0 insertions(+), 0 deletions(-)
 create mode 100644 hello-alpha.txt

$ ls -l
total 0
-rw-r--r--  1 jeet  staff  0 Oct  3 22:52 hello-alpha.txt
-rw-r--r--  1 jeet  staff  0 Oct  3 22:52 hello1.txt

$ git checkout -b gamma
Switched to a new branch "gamma"

$ git rm hello1.txt
rm 'hello1.txt'

$ git commit -m "removed hello in gamma branch"
Created commit 23f9626: removed hello in gamma branch
 0 files changed, 0 insertions(+), 0 deletions(-)
 delete mode 100644 hello1.txt

$ ls -l
total 0
-rw-r--r--  1 jeet  staff  0 Oct  3 22:52 hello-alpha.txt

$ git checkout master
Switched to branch "master"

$ ls -l
total 0
-rw-r--r--  1 jeet  staff  0 Oct  3 22:53 hello1.txt

$ git checkout alpha
Switched to branch "alpha"

$ ls -l
total 0
-rw-r--r--  1 jeet  staff  0 Oct  3 22:52 hello-alpha.txt
-rw-r--r--  1 jeet  staff  0 Oct  3 22:52 hello1.txt

$ git checkout gamma
Switched to branch "gamma"

$ ls -l
total 0
-rw-r--r--  1 jeet  staff  0 Oct  3 22:52 hello-alpha.txt