Switch to master, pull from upstream, push to origin (+optionally delete feature branch)

git_update_master.bat

@echo off

set main_branch=master

REM store current branch name in variable
for /f "delims=" %%a in ('git rev-parse --abbrev-ref HEAD') do @set branch=%%a

git checkout %main_branch% & git pull upstream %main_branch% & git push

REM this GOTO crap is only necessary because CMD doesn't support IF (foo && bar)
IF "%1"=="delete" (
	goto delete
)
IF "%1"=="back" (
	goto back
)

goto end

:delete
REM if need be, delete that branch
IF NOT %branch%==%main_branch% (
	echo "deleting branch %branch%"
	git fetch --prune
	git branch -d %branch%
	git push origin --delete %branch%
)
goto end

:back
REM if need be, switch back to the current branch
IF NOT %branch%==%main_branch% (
	echo "switching back to %branch%"
	git checkout %branch%
)
goto end

:end

git_update_master.sh

#!/bin/bash

main_branch=master

# store current branch name in variable
branch=`git rev-parse --abbrev-ref HEAD`

git checkout $main_branch && git pull upstream $main_branch && git push

# if need be, delete that branch
if [ $branch != $main_branch ] && [ "$1" == "delete" ]; then
	echo "deleting branch $branch"
	git fetch --prune
	git branch -d $branch
	git push origin --delete $branch
fi

# if need be, switch back to the current branch
if [ $branch != $main_branch ] && [ "$1" == "back" ]; then
	echo "switching back to $branch"
	git checkout $branch
fi