Update all git repos in a directory, running git pull --rebase origin master on them all.

updaterepos.sh

#!/bin/bash
 
# store the current dir
CUR_DIR=$(pwd)
 
# Let the person running the script know what's going on.
echo "--- Pulling in latest changes for all repositories... ---"
 
# Find all git repositories and update it to the master latest revision
for i in $(find . -name ".git" | cut -c 3-); do
    reponame=`echo "$i" | cut -d'.' -f1 | cut -d'/' -f1`
    echo "";
    echo "--- " $reponame " ---";
 
    # We have to go to the .git parent directory to call the pull command
    cd "$i";
    cd ..;
 
    # finally pull
    git pull --rebase origin master;
 
    # lets get back to the CUR_DIR
    cd $CUR_DIR
done
 
echo "--- Complete! ---\n"