And while at it, since "command" was using the absolute path to cover
the case of /usr/sbin not being in PATH, we might as well use "test -x"
directly.
- command -v /usr/sbin/nft > /dev/null && sudo nft flush ruleset
+ -[ -x /usr/sbin/nft ] && sudo nft flush ruleset
sudo ./iptables-workstation.sh
sudo iptables-save > iptables
sudo ip6tables-save > ip6tables
sudo ./iptables-workstation.sh
sudo iptables-save > iptables
sudo ip6tables-save > ip6tables