git-start-branch

#!/bin/bash

set -e

# Check if params are enough to go ahead.
baseBranch=$1
featureBranch=$2
test -z "$baseBranch" && echo "Please provide the base and feature branch." 1>&2 && exit 1
test -z "$featureBranch" && echo "Please provide the name for feature branch." 1>&2 && exit 1

# Find which is your current branch
if currentBranch=$(git symbolic-ref --short -q HEAD)
then
    echo On branch "$currentBranch"
    echo "Pulling updates from the base branch $baseBranch..."

    git checkout "$baseBranch"
    git fetch -p
    git merge --ff-only origin/"$baseBranch"
    git checkout -b "$featureBranch"

    echo "Branch $featureBranch is ready"
else
    echo "Cannot find the current branch!"
fi