Add fedora-rm-old-kernels, list-iommu-groups

fedora-rm-old-kernels

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# Source: https://docs.fedoraproject.org/en-US/quick-docs/upgrading-fedora-offline/
+
+old_kernels=($(dnf repoquery --installonly --latest-limit=-1 -q))
+if [ "${#old_kernels[@]}" -eq 0 ]; then
+    echo "No old kernels found"
+    exit 0
+fi
+
+if ! sudo dnf remove "${old_kernels[@]}"; then
+    echo "Failed to remove old kernels"
+    exit 1
+fi
+
+echo "Removed old kernels"
+exit 0

list-iommu-groups

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+
+# https://drakeor.com/2022/02/16/kvm-gpu-passthrough-tutorial/
+
+shopt -s nullglob
+for g in /sys/kernel/iommu_groups/*; do
+    echo "IOMMU Group ${g##*/}:"
+    for d in $g/devices/*; do
+        echo -e "\t$(lspci -nns ${d##*/})"
+    done;
+done