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nft:tldr:75ade
This command is used to list and display the current Nftables ruleset configuration and save it to a file named ${-etc-nftables-conf}.
Let's break down the command:
-
sudo
: This is a command line utility that allows a user with administrative privileges to execute commands as a superuser or another user. -
nft
: This is the command-line tool used to interact with Nftables, a subsystem within the Linux kernel that manages packet filtering and network address translation. -
list ruleset
: This is an argument passed to thenft
command, instructing it to display the current configured ruleset. -
>
: This is a redirection operator in the shell that redirects the output of a command to a file. -
${-etc-nftables-conf}
: This is the file name where the output of thenft list ruleset
command will be saved. The${-etc-nftables-conf}
is a variable representation used here, and it might not be the correct syntax. It should be something like/etc/nftables.conf
or another valid filename.
So, when executing this command with appropriate values set for ${-etc-nftables-conf}
, it will run nft list ruleset
, retrieve the current Nftables ruleset, and save it to the specified file. The sudo
command is used to ensure the user has the necessary privileges to execute nft
with administrative access.