bash script for convert images to all size

tools/convet_to_all_size.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+help () {
+  printf "Parchos Arts convert script \n"
+  printf "Syntax: convert_to_all_size file [-h]\n"
+  printf "* file:\t\t\t\t A mandatory argument and must be a image\n"
+  printf "* -h: \t\t\t\t Show this message\n"
+}
+
+if [ "$1" == "" ];then
+  help
+  exit 1
+fi
+
+filename=$(basename -- "$1")
+extension="${filename##*.}"
+filename="${filename%.*}"
+dirname="$(dirname $(readlink -e $1))"
+
+sizes=( '1600x1200'
+  '1280x1024'
+  '440x247'
+  '1080x1920'
+  '1680x1050'
+  '1024x768'
+  '1366x768'
+  '3200x2000'
+  '3200x1800'
+  '2560x1600'
+  '3840x2160'
+  '720x1440'
+  '5120x2880'
+  '2560x1440'
+  '1280x800'
+  '360x720'
+  '1920x1200'
+  '1440x900'
+  '1920x1080'
+)
+
+if file "$1" | grep -qE 'image|bitmap'; then
+  mkdir -p $dirname/$filename/sizes
+  for size in ${sizes[@]};do
+    echo "converting to $size..."
+    convert $1 -resize $size\> $dirname/$filename/sizes/$size.$extension
+  done
+  
+else
+  echo "The $1 file is not a photo, please use a photo."
+  exit 1
+fi