#!/bin/bash set -e RULESET="add table ip x add set ip x y { type ipv4_addr; flags dynamic,timeout; } add element ip x y { 1.1.1.1 timeout 30s expires 15s }" test_output=$($NFT -e -f - <<< "$RULESET" 2>&1) diff -u <(echo "$test_output") <(echo "$RULESET")