make-branches

#!/bin/sh
# %s/^git checkout master/git rebase master \rgit checkout master/g
# %s/^git merge/git merge --no-ff/g
git checkout master
git branch -D start-here
git branch start-here

git branch f1
echo "text" >> README.md
git add .
git commit -m"A commit on master"
git branch f2
git checkout f1
echo "text" > file-1a
git add .
git commit -m"Adding file 1a"
echo "text" > file-1b
git add .
git commit -m"Adding file 1b"
git branch f4
git checkout master
git merge f1
git branch f3
git checkout f2
echo "text" > file-2a
git add .
git commit -m"Adding file 2a"
echo "text" > file-2b
git add .
git commit -m"Adding file 2b"
git checkout master
git merge f2
git checkout f3
echo "text" > file-3a
git add .
git commit -m"Adding file 3a"
echo "text" > file-3b
git add .
git commit -m"Adding file 3b"
git checkout master
git merge f3
git checkout f4
echo "text" > file-4a
git add .
git commit -m"Adding file 4a"
echo "text" > file-4b
git add .
git commit -m"Adding file 4b"
git checkout master
git merge f4