Hackery to migrate existing GIT repositories to BitBucket as the master origin. Say you have a directory of folders, each with a git repository, that need to be created as private repositories and pushed up. This does that.

gistfile1.sh

#!/bin/bash

# Get your credentials set in your environment before you run:
# export BB_USER="my_username"
# export BB_P="MySERCRETP4ss"
# export BB_OWNER="my_username_or_team"

for f in $(find -type d -path '.*git' |cut -d'.' -f2|sed 's:/::g'); do
	g=$(curl -s -u $BB_USER:$BB_P "https://bitbucket.org/api/1.0/repositories/$BB_OWNER/$f")
	rg=$(echo "$g" | grep -c error)
	if [ "$rg" -eq 1 ];
	then
		echo "Creating repository for [$f]"
		r=$(curl -s -u $BB_USER:$BB_P -X POST "https://bitbucket.org/api/1.0/repositories" -d "name=$f&slug=$f&scm=git&owner=$BB_OWNER&is_private=true&language=php")
		rr=$(echo "$r" | grep -c error)
		if [ "$rr" -eq 0 ];
		then
			echo "   ...Done!"
		else
			echo "   ... uh oh.  Failed: $r"
		fi
	else
		echo "Repository exists for [$f]"
		echo "Getting BitBucket in place..."
		cd "./$f"
		git remote add origin "ssh://git@bitbucket.org/$BB_OWNER/$f.git"
		# http://stackoverflow.com/a/10479068/1130528
		git push -u origin --all
		git push -u origin --tags
		echo "   ...Done!"
		cd ..
	fi
done