exec_in_all_projects.sh

#!/bin/sh

# Take the command to execute from the command line.
command=$@
# Default to updating the project if no command given.
[ -z "$command" ] && command='git pull --rebase ; git submodule init && git submodule update'

# Colors.
boldgreen=$(tput bold)$(tput setaf 2)
colorreset=$(tput sgr0)

for d in `ls`
do
  if [[ -d $d/.git ]]
  then
    echo "In project $boldgreen$d$colorreset"
    pushd $d > /dev/null
    eval $command
    popd > /dev/null
  fi
done

Currently, updating all repos is the default, so, to get all the latest changes into your local repos, simply do:

    ./exec_in_all_projects

To get a compact status for all projects, I suggest a shortened format:

    ./exec_in_all_projects git status -sb

Of course any other command will work as well. Eval'ing user input like it's 1958.