#!/bin/sh

function scandir() {
    local cur_dir parent_dir workdir
    workdir=$1
    cd ${workdir}
    if [ ${workdir} = "/" ]
    then
        cur_dir=""
    else
        cur_dir=$(pwd)
    fi

    for dirlist in $(ls ${cur_dir})
    do
        if test -d ${dirlist};then
            cd ${dirlist}
            scandir ${cur_dir}/${dirlist}
            cd ..
        else
            echo ${cur_dir}/${dirlist}
        fi
    done
}

if test -d $1
then
    scandir $1
elif test -f $1
then
    echo "you input a file but not a directory,pls reinput and try again"
    exit 1
else
    echo "the Directory isn't exist which you input,pls input a new one!!"
    exit 1
fi

#! /bin/bash
function read_dir(){
    for file in `ls $1`
    do
        if [ -d $1"/"$file ]  //注意此處之間一定要加上空格，否則會報錯
        then
            read_dir $1"/"$file
        else
            echo $1"/"$file
        fi
    done
}

#測試目錄 test
read_dir test

chmod +x test.sh
sh test.sh

遞歸實現各個子目錄孫目錄......

#!/bin/bash

#modify.func

doit()   //處理當前目錄下的非目錄文件，忽略目錄文件

{

    oldname=`ls | grep "$1$"`

    for name in $oldname

    do

       if [ -d "$name" ]

       then :

       else

            basename=`echo $name | awk -F "." '{print $1}'`  

            newname="$basename$2"                                       

            echo -e "$PWD/$name\t\t$newname"

            mv $name $newname

            count=`expr ${count} + 1`

       fi

    done

    return 0

}

do_recursive()          //從當前目錄開始，遞歸處理各目錄

{

    doit $1 $2

    for filename in `ls`

    do

         if [ -d "$filename" ]

         then

             cd $filename

             do_recursive $1 $2

             cd ..

         fi

    done

    return 0

}

modify()                     //處理當前目錄，并報告結果，這個相當于主函數，也可以直接調用do_recursive

{

    PARAMS=2

    if [ $# -ne $PARAMS ]

    then

        echo "usage: mv_to .suf1 .suf2"

        return 1

    fi

    count=0

    do_recursive $1 $2

    echo "complete! $count files have been modified."

    return 0

}