git-export-repo-to-github.sh

#!/usr/bin/env bash

## Preconditions;
## 1: Destination (Github) repository name == Source (local) repository name
## 2: [IMPORTANT!!!] Those two repositories (for GitHub & local) should be created prior to running this script

scriptName=${0##*/}

if [ $# -lt 1 ] ; then
    echo "Usage : $scriptName [repo name] [github user name] [remote alias]"
    exit 0
fi

srcRepoPath="${1}"
userName="${2:-suewonjp}" ## Customize default value as you wish
remoteAlias="${3:-github}" ## Customize default value as you wish

echo "$scriptName : srcRepoPath=${srcRepoPath}"
echo "$scriptName : userName=${userName}"
echo "$scriptName : remoteAlias=${remoteAlias}"

## Of course, the source repository should exist!
[ -d "${srcRepoPath}" ] && {
    cd "${srcRepoPath}"
    srcRepoPath="$PWD"
    [ -d .git ] || {
        echo "$scriptName [ERROR] : The directory [ ${srcRepoPath} ] is NOT a git repository"
        exit 1
    }
    cd - > /dev/null 2>&1
} || {
    echo "$scriptName [ERROR] : The directory [ ${srcRepoPath} ] doesn't exist!"
    exit 1
}

srcRepo="${srcRepoPath##*/}"
dstRepo="https://github.com/${userName}/${srcRepo}.git"

type wget || {
    echo "$scriptName [ERROR] : wget is required! Please, install it first"
    exit 1
}

wget --spider "${dstRepo}" || {
    echo "$scriptName [ERROR] : The remote repository [ ${dstRepo} ] doesn't exist!"
    exit 1
}

## Create a temporary directory for a bare clone to push
tmpDir=~/Downloads/__tmp__$( date "+%y-%m-%d_%Hh%Mm%Ss" )
mkdir -p "${tmpDir}"
trap 'rm -rf "${tmpDir}"' 0
cd "${tmpDir}" 

## Create a bare clone of the source repository
git clone --bare "${srcRepoPath}"

## Push the bare repository to GitHub using the "mirror" option,
## which ensures that all references, such as branches and tags are copied to the destination repository
cd "${srcRepo}".git
git push --mirror "${dstRepo}"

## Move to the source repository
cd "${srcRepoPath}" 

## Add the destination Github repository as remote
git remote add "${remoteAlias}" "${dstRepo}"

## Confirm the remote has been properly added
git remote -v

say that you have a local git repo named MyAweomeProject

1. First, manually create your repo at github ( the name of the github repo should be MyAweomeProject )

2. Run the script

   git-export-repo-to-github.sh /path/to/MyAwesomeProject