linux shell批量压缩某个目录下图片大小

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#！/bin/shread -p "Input Path:" SPATHmaxsize=$((1024*200))FILELIST () {        filelist=`ls $SPATH`        for filename in $filelist; do                fname=$(basename "$filename")                ex="${fname##*.}"                if [ -f $filename ] && [ $ex = 'jpg' -o $ex = 'jpeg' -o $ex = 'png' -o $ex = 'JPG' -o $ex = 'JPEG' -o $ex = 'PNG' ] ;then                        #echo $filename                        COMPRESS $filename                elif [ -d $filename ];then                        cd $filename                        SPATH=`pwd`                        FILELIST                        cd ..                fi        done}COMPRESS () {        imgpath=$1        filesize=`ls -l $imgpath | awk '{ print $5 }'`        if [ $filesize -ge $maxsize ]; then                #convert -quality 85% $imgpath $imgpath                echo $imgpath        fi}cd $SPATHFILELISTecho "Done."

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