On 6/27/21 12:07 PM, Kerin Millar wrote:
Use of shell redirection is optional in this case but I would caution
against making it a habit in conjunction with the use of sudo.
I believe your statement is not distribution-safe. Red Hat's
implementation of ip[6]tables-restore does not implement reading a file.
Ubuntu's implementation of ip[6]tables-restore does.
This observation is backed up by viewing "iptables-restore -h".
That said, I suspect that Debian would use substantially the same
version of iptables-restore that Ubuntu does, so your observation would
be applicable.
(I spend two decades in the Red Hat universe. Then CentOS happened.
Moving all my servers to Ubuntu server edition.)