problem running crontab jobs

[Luca Ferrari]

On Tuesday 15 May 2007 nodata's cat, walking on the keyboard, wrote:
> ${BACKUP_DIR}/sorgenti_java_$(/bin/date +'%d_%m_%
> y).bz2  /mnt/disco1/src/java

Thanks for the suggestions from everyone, but the only way I found to get the 
backup working is to place everything into a shell script and to call it. 
Never the backticks or the $() syntax worked!

Luca