Incremental backup script - Tar problem
 

OK - I've been writing smoe backup scripts recently, but have run in to a problem... tar is archiving everything in anything 1 folder or more depth than I specifically request in the script, and not checking it's date.

That's probably not very clear, so I'll try and explain. Firstly, here's my script:
I'm trying to make it only archive files which have been changed since yesterday, to any directory depth, but this tar command will only check the dates of files in a specifically requested directory,

eg, /home/josh/docs/file.txt will be checked and acted on appropriately, but /home/josh/docs/work/file.txt won't be checked, and will be archived regardless.

any ideas what I'm doing wrong?

Here is an example which may get you going.
The date of the file is checked with the mtime -24 command.

#!/bin/bash

filename=`date '+%m%d%y'`

cd /home/josh
find . -depth -type f -name '*' \
-mtime -24 -exec /bin/tar -cvzf \
/home/josh/${filename}.tar.gz {} \;