#include <stdio.h>
int main()
{
printf(“Please install ImageMagick before run this programme ,else it will not run correctlyn”);
system(“mkdir small”);
system(“cp *.jpg ./small”);
system(“find ./small -name ‘*.jpg’ -exec convert -resize 300×300 {} {} /;”);
system(“pwd”);
system(“rename .jpg _small.jpg small/*.jpg”);
printf(“nConvert pictures finished,plesae check itn”);
return 0;
}

#!/bin/sh
for img in `find ./ -name “*.[bB][mM][pP]“`; do
#change upper filename to lower
_imglower=`echo $img|tr “[:upper:]” “[:lower:]“`;
#get file’s basename
_basename=`basename $_imglower .bmp`;
#get file’s dir
_dirname=`dirname $img`;
#get desc filename with path
_basefullname=$_dirname”/”$_basename”.jpg”;
#do convert
convert $img $_basefullname;
#remove bmp file
rm $img;
echo “deal $_basefullname successfully”;
done

for img in `find ./ -name “*.[jJ][pP][gG]“`; do
convert -resize 85%*85% $img $img-resized;
rm $img;
mv $img-resized $img
echo $img
done
for img in `find ./ -name “*.[pP][nN][gG]“`; do
convert -resize 85%*85% $img $img-resized;
rm $img;
mv $img-resized $img
echo $img
done
for img in `find ./ -name “*.[gG][iI][fF]“`; do
convert -resize 85%*85% $img $img-resized;
rm $img;
mv $img-resized $img
echo $img
done