Problem launching backup script from cron

[Steve Waage]

Hello,
    I've installed the following job in root's crontab file ...

# m h  dom mon dow   command
20 17 * * *  /usr/bin/find / -depth -xdev|/bin/cpio -o>/backup/`date 
+%A`.cpio

   ...and right on time my  /var/log/syslog file contains the following 
entry...

Oct 17 17:20:01 content /USR/SBIN/CRON[5921]: (root) CMD (/usr/bin/find 
/ -depth -xdev|/bin/cpio -ov>/backup/`date +)

    ... but the job never runs.  I've been running the same command from 
the shell.  Any tips on why it won't run
from cron?

Thanks,
Steve