# 🌐 IP Command Cheat Sheet

The `ip` command is a powerful tool for network configuration and management in Linux. It replaces many of the older `ifconfig` functionalities.

---

## 📌 General Syntax

```bash
ip [ OPTIONS ] OBJECT { COMMAND | help }
```

**Common OBJECTS:**

* `addr` – IP addresses
* `link` – Network interfaces
* `route` – Routing tables
* `neigh` – ARP table
* `rule`, `netns`, etc.

---

## 🔍 View Network Information

### Show All IP Addresses

```bash
ip addr show
# or shorthand:
ip a
```

### Show IP for Specific Interface

```bash
ip addr show dev eth0
```

### Show Link Layer Information

```bash
ip link show
```

---

## 🔧 Interface Management

### Bring Interface Down

```bash
ip link set eth0 down
```

### Bring Interface Up

```bash
ip link set eth0 up
```

---

## 🌐 IP Address Configuration

### Add an IP Address

```bash
ip addr add 192.168.1.10/24 dev eth0
```

### Delete an IP Address

```bash
ip addr del 192.168.1.10/24 dev eth0
```

---

## 🛣️ Routing

### Show Routing Table

```bash
ip route show
```

### Add a Default Gateway

```bash
ip route add default via 192.168.1.1
```

### Add a Specific Route

```bash
ip route add 192.168.10.0/24 via 192.168.5.2
```

### Delete a Specific Route

```bash
ip route del 192.168.10.0/24 via 192.168.5.2
```

---

## 🧱 Bridge Interface Management

### Create a Bridge

```bash
ip link add name br0 type bridge
```

### Delete a Bridge

```bash
ip link delete br0
```

### Bring Bridge Up

```bash
ip link set br0 up
```

---

## 🛠️ Example: Set a Static IP Address

```bash
ip link set ens33 up
ip addr add 10.10.40.12/24 dev ens33
ip route add default via 10.10.40.1
```

---

### ✅ Tip:

Always verify with:

```bash
ip a
ip r
```