shell 一键更新多个Git项目

#!/bin/bash
function readdir()
{
for file in `ls $1`
do

if [ -d $1"/"$file ]; then
    cd $1"/"$file
    if [ -d ".git" ]; then
        echo $1"/"$file
        git pull
    fi
    cd ..
    readdir $1"/"$file
fi

done
}
readdir `pwd`