I've deleted a log file to save space and...
 

I've deleted a log file to save space but now I'm not capturing logs from the cisco server. Is it a normal thing when one deletes a log file? (I've deleted it from /var/log/cisco.log)

.... In fact I had to reboot the computer for the logs to be captured again... I think I have to use logrotate to limit the size of the log files.

you could have done also instead of rebooting your computer do a: touch /var/log/cisco.log

lyx0m
:Pengy:

next time 'cat /dev/null > /var/log/cisco.log' instead of rm...
Some logs will recreate themselves and others won't.