run a git command in all subdirectories

gitall.sh

# output path to child directories which contain a .git folder
alias findgitdirs='find . -maxdepth 2 -type d -name ".git" | sed -e "s|/.git||"'
gitall(){
    # execute the argument as a git command in all (git) subdirectories
    # if there are no arguments then print all of the directorries that would be used
    if [ "$#" -eq 0 ]; then findgitdirs; return; fi
    findgitdirs | xargs -I{} git -C {} "$@"
}