simple and crude script to combine few repos to one on master branch

git_combine

#!/bin/bash
if [ ! $# -gt 2 ]; then
    echo "Usage: ./git_combine.sh new_repo_folder repo_folder repo_folder ..."
    exit
fi

if [ ! -d $1 ]; then
    mkdir $1
fi

if [ ! -d $1/.git ]; then
    cd $1
    git init
fi

new_repo=$1
shift

while test $# -gt 0
do
    if [ ! -d $1 ]; then
        echo "$1 does not exist"
        exit
    fi
    if [ ! -d $1/.git ]; then
        echo "$1 is not a git repository"
        exit
    fi

    echo "$(tput setaf 2)Moving $1$(tput sgr0)"
    cd $1

    git fetch --all
    git checkout master
    git pull origin master
    git remote rm origin

    for f in `ls`; do
        if [ ! -d $1 ]; then
            mkdir $1
        fi
        git mv $f $1/
    done

    git commit -m "Prepare to move $1 to $new_repo"

    cd ../$new_repo
    echo "$(tput setaf 2)Adding remotes$(tput sgr0)"

    git remote add $1 ../$1
    git pull $1 master
    git remote rm $1

    cd ..
    rm -rf $1
    shift
done

echo "$(tput setaf 2)Done$(tput sgr0)"

-gt is greater than
-d checks if it's directory
$1..$N is list of arguments being $0 git_combine.sh and shift does pop of $N array so after first shift $2 becomes $1 and I just run while statement checking if $# has any more arguments. $# is a number of total arguments given
$(tput setaf 2)Done$(tput sgr0) thats for colors