Find and rename files in subdirs

[mgump]

Hello Scripting-Gurus,

I'am new in programming Unix shell-scripts.
Thats my problem,
I have to find and rename a large no. of jpg-files (2000-3000).This files and also the directories contains spaces
eq. /mp3/Alben/A -F/Fury In The Slaughterhouse/FrontA.jpg
find-arguments: filename contains (case insensitive) "front"
and not contains "back" and extension is ".jpg"
All matching files must be renamed to cover.jpg in their old directories.
I have read here a many threads but i can´t find a solution
for my problem. Has someone an idea ?

greets mgump

(Please excuse my "perfect" english)

 

[iribach]

for file in `find ...`
do case "$file" in *[fF][rR][oO][nN][tT]*)...
;; *) ...
;; esac
done

 

[Ygor]

find /mp3 -name '*[fF][rR][oO][nN][tT]*jpg' -print | while read FILE
do
mv "$FILE" "$(dirname $FILE)/cover.jpg"
done