#!/bin/sh
# find files in /boot/(path) subfolders, skip (path)=/overlays/, move others to (path)
# ver 2017-10-26 22:55

#start in boot
cd /boot/

# redircet echo and error to log
log="/boot/move_files.log"
touch $log
exec 1>>${log}
exec 2>>${log}
# start with date
echo ""
echo "++ $(date) - start"

# find $PWD -type f -maxdepth 10 will generate a complete file list with path including /boot/ up to 10 subfoldres deep
#  (if you remove $PWD each file path starts with './' )
#  '-type f' list only files = else you get dir mixed in i.e. root listed as . or /boot and ./overlaps or /boot/overlays )
# to create just the folder at /, in FAT32 (/boot/) put a dmy file eg '/my-new/folder/dmy'
files=$(find $PWD -maxdepth 10 -type f)
count=0
for file in $files
do
echo "++ processing $file"
# only process files in sub-folders.
#  ${file:6} skips 1st 6 chars (/boot/) = so you get just filename (from root), and sub-folder files are 'fdr/filename'
# Only prcess files in sub-folders (=~ will search whole string for sub string)
 if  [[ ${file:6} =~ "/" ]]; then
 # OK files is in a sub-folder .. only process if not /overlays/
	if  [[ ${file:6} != "overlays/"* ]]; then
	# OK, got a valid file, do the move
	#  ${file:5} will skip 5, i.e. chop /boot off the front, so file path/name starts with /
	echo "++ Moving $file to ${file:5}"
	# bash mv / cp doesn't create destination driectory, mv -f "$file" "${file:5}", 
	#  so we have to use mkdir -p to create dir chain, but that also creates file name as dir
	mkdir -p "${file:5}"
	# now remove the end )filename) dir
	rmdir "${file:5}"
	# finally, do the mv
	mv -f "$file" "${file:5}"
	# increment the count let or () needed for arithmetic proc (else it treats as text)
	count = $(( count + 1 ))
	# add execute if .sh
	if [ $file == *".sh" ]; then
		echo "++ Adding execute permissions to file ${file:5}"
		chmod +x "${file:5}"
	fi
	else echo " - skipping overlays/ file ${file:6}"
	fi
 else echo " - skiping root file ${file:6}"
 fi
done
echo "++ $(date) - done $count files moved"
# OK thats all
echo ""