[Jailkit-users] nohup in jail

[Martin]

Hello all jailkit users,
did anyone tried to exec bash script like this (outside of jail):
.
..
...
printf "#!/bin/bash\n" > /home/jail/tmp/$3.sh;
echo "umask 0007 && cd /home/$3 && touch nohup.out && chmod 750 
nohup.out && nohup ./$prog -- $arg" >> /home/jail/tmp/$3.sh;
chmod 755 /home/jail/tmp/$3.sh;
chown root.root /home/jail/tmp/$3.sh;
/usr/sbin/jk_chrootlaunch -j /home/jail -u jailer -g ftpgroup -x 
/home/jail/tmp/$3.sh
...
..
.

when i exec script manualy nohup.out file is fully filled by ./$prog 
output, but when this bash script is executed like this (in crontab):
* * * * * /home/rootcmds/home/sc.sh
, then file nohup.out is created, but has 0B size and nothing is inside.

Any idea how to solve or how to force crontab executed bash script that 
will run program in jail to append it's output to nohup.out file?

Thanks for any reply,
regards,
Martin