I found this********
Add expiry date for any F line
This is a very wonderful addition for CCcam server owners to control their F lines
They can add Expiry date for any F line
1st: you create the F line as normal and end it with the Expiry date
F: user pass 1 1 0 { 0:0:1 } #13-05-2011
2nd: download the Expiry script from here and add it on the following directory
/bin
3rd: chmod 755
chmod 755 /bin/expiry
Finally: we make the script to check the remove the expired F line daily at 12AM by the following
crontab -e
add this
00 00 * * * root /bin/expiry
now you will found new file with name "expired" on the directory
/var/etc
where all you expired F lines listed
but I don't know were you put this 00 00 * * * root /bin/expiry
any help will be appreciated..