#!/system/bin/sh

#

#This shell to rename a or some jpg files

#some jpg file name are like this : IMG_200315_135037.jpg

#when we sort them,the sort are not arange by date

#so this shell will change its name to IMG_20150320_135037.jpg

#

# Usage: jpgrename dirname

#

preYear=

maxdepth=

alias find='busybox find'

alias cut='busybox cut'

if [ -d $ ]; then

filenames=`find $ -maxdepth $maxdepth -name "IMG_??????_??????.jpg" -print`

elif [ -f $ ]; then

if [ `echo $ | cut -c ` != '/' ]; then

filenames=./$

fi

else

echo "No such file or directory: $1"

fi

#echo $filenames

count=

#filearr=$(echo $filenames)

for item in $filenames

do

oldFileName=$item

item1=${item%/*}

item=${item#$item1}

item2=`echo $item | cut -c 1-5`

item3=`echo $item | cut -c 6-7`

item4=`echo $item | cut -c 8-9`

item5=`echo $item | cut -c 10-11`

item6=`echo $item | cut -c 12-`

newFileName=$item1$item2$preYear$item5$item4$item3$item6

mv $oldFileName $newFileName

#echo $oldFileName-$newFileName

#echo ll

let count++

done

echo Total rename $count files