There are a few problems here. A directory with 80,000 files will behave very slowly with most file systems. Directory accesses are almost always sequential. And those file names are asking for trouble. If you really want to do this, make a practice directory hierarchy will only a hundred files or so and try it out there.
Code:
$ find pix
pix
pix/a
pix/a/a.gif
pix/a.jpg
pix/b
pix/b/a.gif
pix/b/xyz 001 [1] .jpg
pix/b.jpg
pix/c
pix/c/a.gif
pix/c.jpg
pix/d.jpg
pix/e.jpg
pix/f.jpg
pix/g.jpg
pix/h.jpg
pix/i.jpg
pix/j.jpg
pix/k.jpg
pix/l.jpg
pix/m.jpg
pix/n.jpg
pix/o.jpg
pix/p.jpg
pix/q.jpg
pix/r.jpg
pix/s.jpg
pix/t.jpg
pix/u.jpg
pix/v.jpg
pix/w.jpg
pix/x.jpg
pix/xyz 001 [1] .jpg
pix/xyz 001 [2] .jpg
pix/xyz 001 ]2[ .jpg
pix/y.jpg
pix/z.jpg
$
$
$
$
$ cat fixpix
#! /usr/local/bin/bash
SOURCE=pix
DEST=newpix
count=0
find $SOURCE -type f | while read pathname ; do
((count=count+1))
dir=${pathname%/*}
file=${pathname#$dir/}
base=${file%.*}
typ=${file##*.}
newfile=$(printf "%s%09d.%s" "$base" $count "$typ")
echo mv \""$pathname"\" \""$DEST/$newfile"\"
done
$
$
$
$
$
$ ./fixpix
mv "pix/a/a.gif" "newpix/a000000001.gif"
mv "pix/a.jpg" "newpix/a000000002.jpg"
mv "pix/b/a.gif" "newpix/a000000003.gif"
mv "pix/b/xyz 001 [1] .jpg" "newpix/xyz 001 [1] 000000004.jpg"
mv "pix/b.jpg" "newpix/b000000005.jpg"
mv "pix/c/a.gif" "newpix/a000000006.gif"
mv "pix/c.jpg" "newpix/c000000007.jpg"
mv "pix/d.jpg" "newpix/d000000008.jpg"
mv "pix/e.jpg" "newpix/e000000009.jpg"
mv "pix/f.jpg" "newpix/f000000010.jpg"
mv "pix/g.jpg" "newpix/g000000011.jpg"
mv "pix/h.jpg" "newpix/h000000012.jpg"
mv "pix/i.jpg" "newpix/i000000013.jpg"
mv "pix/j.jpg" "newpix/j000000014.jpg"
mv "pix/k.jpg" "newpix/k000000015.jpg"
mv "pix/l.jpg" "newpix/l000000016.jpg"
mv "pix/m.jpg" "newpix/m000000017.jpg"
mv "pix/n.jpg" "newpix/n000000018.jpg"
mv "pix/o.jpg" "newpix/o000000019.jpg"
mv "pix/p.jpg" "newpix/p000000020.jpg"
mv "pix/q.jpg" "newpix/q000000021.jpg"
mv "pix/r.jpg" "newpix/r000000022.jpg"
mv "pix/s.jpg" "newpix/s000000023.jpg"
mv "pix/t.jpg" "newpix/t000000024.jpg"
mv "pix/u.jpg" "newpix/u000000025.jpg"
mv "pix/v.jpg" "newpix/v000000026.jpg"
mv "pix/w.jpg" "newpix/w000000027.jpg"
mv "pix/x.jpg" "newpix/x000000028.jpg"
mv "pix/xyz 001 [1] .jpg" "newpix/xyz 001 [1] 000000029.jpg"
mv "pix/xyz 001 [2] .jpg" "newpix/xyz 001 [2] 000000030.jpg"
mv "pix/xyz 001 ]2[ .jpg" "newpix/xyz 001 ]2[ 000000031.jpg"
mv "pix/y.jpg" "newpix/y000000032.jpg"
mv "pix/z.jpg" "newpix/z000000033.jpg"
$
