choerbaert.org [ˈχœrbɛrt]

Mit diesem simplen Script kann man Auflösung und Format eine beliebigen Anzahl an Bildern unkompliziert ändern.

• imagemagick
• sed

#!/bin/sh
 
convert_size()
{
 echo -n "pattern for matching files (\"*\", \"*.jpg\" etc.): "
 read pattern
 
 echo -n "size of the new images (e.g. \"800x600\"): "
 read size
 
 for image in $pattern; do
        convert -verbose "$image" -geometry "$size" "$image"
 done
}
 
convert_format()
{
 echo -n "pattern for matching files (\"*\", \"*.jpg\" etc.): "
 read pattern
 
 echo -n "format of the new images (e.g. \"png\"): "
 read format
 
 for image in $pattern; do      # replace everything behind the last dot by $format
        convert -verbose "$image" $(echo $image | sed -r "s/\.[a-z]{2,4}$/.$format/")
 done
}
 
echo "[1] convert image size"
echo "[2] convert image format"
read choice
 
echo
 
case "$choice" in
  1)    convert_size;
        ;;
  2)    convert_format;
        ;;
esac