update local git repositories in directory

update-git-repos.sh

#!/bin/bash

CURRENT=$PWD
echo $CURRENT

function ergodic(){
    if [ -n "$1" ] ;then
        echo '>>>>>> ENTER [' $1 '] >>>>>>'
        cd $1
    else
        cd .
    fi
    for dir in `ls .`
    do
        if [ -d $dir'/.git' ]
        then
            cd $dir
            echo '========' $dir '========'
            git pull
            cd ..
        elif [[ $dir == _* ]]
        then
            ergodic $dir
        fi
    done

    if [ -n "$1" ] ;then
        echo '<<<<<< EXIT [' $1 '] <<<<<<'
        cd ..
    fi
}

IFS=$'\n' #这个必须要，否则会在文件名中有空格时出错
ergodic $1
cd $CURRENT