Setup scripts added

scripts/set_static_ip_nmcli.sh

@@ -0,0 +1,103 @@
+#!/bin/bash
+#
+# Interactive Static IP Configuration Script using nmcli
+# Usage: sudo bash set_static_ip_nmcli.sh
+#
+
+set -euo pipefail
+
+log() { echo "[$(date '+%Y-%m-%d %H:%M:%S')] $*"; }
+
+if [ "$(id -u)" -ne 0 ]; then
+    log "ERROR: This script must be run as root (use sudo)."
+    exit 1
+fi
+
+if ! command -v nmcli &> /dev/null; then
+    log "ERROR: nmcli is not installed. This system may not be using NetworkManager."
+    exit 1
+fi
+
+echo "========================================="
+echo "   NetworkManager Static IP Setup"
+echo "========================================="
+echo ""
+log "Available Network Connections:"
+mapfile -t CONNECTIONS < <(nmcli -t -f NAME connection show)
+
+if [ ${#CONNECTIONS[@]} -eq 0 ]; then
+    log "ERROR: No network connections found."
+    exit 1
+fi
+
+for i in "${!CONNECTIONS[@]}"; do
+    echo "  $((i+1)). ${CONNECTIONS[$i]}"
+done
+echo ""
+
+read -p "Enter the number of the connection to configure: " CONN_CHOICE
+if ! [[ "$CONN_CHOICE" =~ ^[0-9]+$ ]] || [ "$CONN_CHOICE" -lt 1 ] || [ "$CONN_CHOICE" -gt "${#CONNECTIONS[@]}" ]; then
+    log "ERROR: Invalid selection. Please enter a valid number from the list."
+    exit 1
+fi
+
+CONN_NAME="${CONNECTIONS[$((CONN_CHOICE-1))]}"
+
+echo ""
+log "Current settings for '$CONN_NAME':"
+CUR_METHOD=$(nmcli -g ipv4.method connection show "$CONN_NAME")
+CUR_IP=$(nmcli -g IP4.ADDRESS connection show "$CONN_NAME")
+if [ -z "$CUR_IP" ]; then
+    CUR_IP=$(nmcli -g ipv4.addresses connection show "$CONN_NAME")
+fi
+CUR_GW=$(nmcli -g ipv4.gateway connection show "$CONN_NAME")
+CUR_DNS=$(nmcli -g ipv4.dns connection show "$CONN_NAME")
+echo "  - Method:  ${CUR_METHOD:-<Not Set>}"
+echo "  - IP Addr (CIDR): ${CUR_IP:-<Not Set>}"
+echo "  - Gateway: ${CUR_GW:-<Not Set>}"
+echo "  - DNS:     ${CUR_DNS:-<Not Set>}"
+echo ""
+
+IPV4_CIDR_REGEX="^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/([0-9]|[1-2][0-9]|3[0-2])$"
+IPV4_REGEX="^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
+DNS_REGEX="^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)(,[ ]?((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))*$"
+
+read -p "Enter static IP address with CIDR (e.g., 192.168.1.100/24): " IP_ADDR
+if [ -z "$IP_ADDR" ]; then
+    log "ERROR: IP address cannot be empty."
+    exit 1
+fi
+
+if ! [[ "$IP_ADDR" =~ $IPV4_CIDR_REGEX ]]; then
+    log "ERROR: Invalid IP address format. Must be a valid IPv4 CIDR notation (e.g., 192.168.1.100/24)."
+    exit 1
+fi
+
+read -p "Enter Gateway IP address (e.g., 192.168.1.1): " GATEWAY
+if [ -z "$GATEWAY" ]; then
+    log "ERROR: Gateway cannot be empty."
+    exit 1
+fi
+if ! [[ "$GATEWAY" =~ $IPV4_REGEX ]]; then
+    log "ERROR: Invalid Gateway IP format (e.g., 192.168.1.1)."
+    exit 1
+fi
+
+read -p "Enter DNS server(s) separated by commas (e.g., 8.8.8.8,1.1.1.1): " DNS_SERVERS
+if [ -z "$DNS_SERVERS" ]; then
+    log "ERROR: DNS servers cannot be empty."
+    exit 1
+fi
+if ! [[ "$DNS_SERVERS" =~ $DNS_REGEX ]]; then
+    log "ERROR: Invalid DNS server format. Must be comma-separated IPv4 addresses (e.g., 8.8.8.8,1.1.1.1)."
+    exit 1
+fi
+
+log "Applying static IP configuration to '$CONN_NAME'..."
+nmcli connection modify "$CONN_NAME" ipv4.method manual ipv4.addresses "$IP_ADDR" ipv4.gateway "$GATEWAY" ipv4.dns "$DNS_SERVERS"
+
+log "Restarting connection to apply changes (you may lose SSH briefly if connected remotely)..."
+nmcli connection up "$CONN_NAME"
+
+log "=== Configuration Complete ==="
+log "Verify your new IP address using 'ip addr show' or 'nmcli device show'."