Add script to enable and start systemd-resolved

service

enable-dns-service/README.md

@@ -0,0 +1,9 @@
+## Why?
+
+This is a handy script to enable and start systemd-resolved service.
+
+## How to use?
+
+```bash
+bash -c "$(wget -qLO - https://raw.githubusercontent.com/bigbeartechworld/big-bear-scripts/master/enable-dns-service/enable_dns_service.sh)"
+```

enable-dns-service/enable_dns_service.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# This script restores the original DNS settings and re-enables systemd-resolved
+
+# Check for root privileges
+if [[ $EUID -ne 0 ]]; then
+    echo "This script must be run as root."
+    exit 1
+fi
+
+resolv_conf="/etc/resolv.conf"
+backup_resolv_conf="/etc/resolv.conf.bak"
+
+# Restore the original resolv.conf from backup if it exists
+if [ -f "$backup_resolv_conf" ]; then
+    echo "Restoring the original DNS settings from backup..."
+    cp "$backup_resolv_conf" "$resolv_conf"
+    echo "Restored /etc/resolv.conf:"
+    cat "$resolv_conf"
+else
+    echo "No backup found. Cannot restore the original DNS settings."
+    exit 1
+fi
+
+# Re-enable and start systemd-resolved if it was disabled
+if systemctl is-enabled systemd-resolved.service | grep -q 'disabled'; then
+    echo "Re-enabling and starting systemd-resolved..."
+    systemctl enable systemd-resolved.service
+    systemctl start systemd-resolved.service
+else
+    echo "systemd-resolved was not disabled by the script, no action needed."
+fi
+
+echo "Script reversal complete."