This is useful for preparing to serve a zone by running a script or starting a background process. (Also see shutdown.)
Each command that is executed at startup is blocking, unless you suffix the command with a space and
&, which will cause the command to be run in the background. The output and error of the command go
to stdout and stderr, respectively. There is no stdin.
A command will only be executed once for each time it appears in the Corefile.
- COMMAND is the command to execute; it may be followed by arguments.
Start command before the server starts listening:
startup /etc/init.d/command start
On windows, you might need to use quotes when the command path contains spaces:
startup "\"C:\Program Files\command.exe\" -b 127.0.0.1:9123" &