On Dec 23, 2024, Timothy M Butterworth wrote: > sudo fails with a permission denied error. > tmb@hp-debian:~$ sudo /usr/sbin/iptables-save > /etc/iptables/rules.v4 > bash: /etc/iptables/rules.v4: Permission denied
"sudo" only modifies "iptables-save", and not the redirect (it happens
as your user, *before* the invocation of sudo, as I recall).
You'll need something like this, so that rules.v4 is opened as root
rather than your user:
sudo /usr/sbin/iptables-save | sudo tee /etc/iptables/rules.v4
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