Shell Programming and Scripting

#!/bin/ksh
IMAGES_HOME="/websites/www.abc.com/ROOT/uploads/inventory/"
find "$IMAGES_HOME" -type f \
    \( -name '*.[Jj][Pp][Gg]' -o -name '*.[Jj][Pp][Ee][Gg]' \) |
    grep -F /400x300/ | while read -r f
do	printf 'Processing: %s\n' "$f"
					# If f=/prefix/x/y/400x300/z.jpg
	file=${f##*/}			# x.jpg
	p3=${f%/*}			# /prefix/x/y/400x300
	d3=${p3##*/}			# 400x300
	p2=${p3%/*}			# /prefix/x/y
	d2=${p2##*/}			# y
	p1=${p2%/*}			# /prefix/x
	d1=${p1##*/}			# x
	printf 'file: %s\n' "$file"
	printf 'd1: %s\n' "$d1"
	printf 'd2: %s\n' "$d2"
	printf 'd3: %s\n' "$d3"
	printf 'p1: %s\n' "$p1"
	printf 'p2: %s\n' "$p2"
	printf 'p3: %s\n' "$p3"
	pd="$p2/110x85"			# /prefix/x/y/110x85
	printf 'pd: %s\n' "$pd"
	if [ ! -d "$pd" ]
	then	printf 'Creating directory: %s\n' "$pd"
		mkdir "$pd"
	fi
	dest="$pd/$file"		# /prefix/x/y/110x85/z.jpg
	printf 'dest: %s\n' "$dest"
done