current_dir=$PWD
echo "Finding repositories in $current_dir" && echo
for repo in `find ${current_dir} | grep ".git$"`
do
    echo "Repository ${repo%.git} size `du -hcs ${repo} | grep 'total\|итого'`"
    cd ${repo%.git} && git gc > /dev/null 2>&1
    echo "Size after optimization `du -hcs ${repo} | grep 'total\|итого'`" && echo
    cd ${current_dir}
done