Command to edit crontab with Nano: env EDITOR=nano crontab -e
-i = Case Insensitive or Ignore Case -v = Invert Match to select non-matching lines -c = Output a count of the number of lines that have a match. Include -v to count non-matching lines -n = Prefix each line …
Validate the DNS Zone file: # named-checkzone <domain name> /path/to/zone/file Reload Zone Files: # rndc reload