# route

## route

The `route` command in Linux is used to view and manipulate the IP routing table. This command displays the current routing table and allows you to add or remove routes. However, like `ifconfig`, the `route` command is considered deprecated in favor of the `ip` command from the `iproute2` package.

1. **View the Routing Table**:

   ```sh
   route
   ```

   or

   ```sh
   route -n
   ```

   The `-n` option prevents the command from attempting to resolve IP addresses to hostnames, making the output quicker to generate and easier to read.
2. **Add a Default Gateway**:

   ```sh
   route add default gw 192.168.1.1
   ```

   This command sets the default gateway to `192.168.1.1`.
3. **Add a Route to a Specific Network**:

   ```sh
   route add -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.1.1
   ```

   This command adds a route to the network `192.168.2.0` with a netmask of `255.255.255.0`, routing through the gateway `192.168.1.1`.
4. **Add a Host Route**:

   ```sh
   route add -host 192.168.1.2 gw 192.168.1.1
   ```

   This command adds a route for a specific host `192.168.1.2` through the gateway `192.168.1.1`.
5. **Delete a Route**:

   ```sh
   route del -net 192.168.2.0 netmask 255.255.255.0
   ```

   This command removes the route to the network `192.168.2.0`.

#### Example of `route` Command Output

When you run `route -n`, you might see output similar to this:

```sh
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.1.1     0.0.0.0         UG    100    0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     100    0        0 eth0
```

#### Using `ip` Command for Routing

The `ip` command provides more functionality and is the modern replacement for `route`. Here are equivalent commands using `ip`:

1. **View the Routing Table**:

   ```sh
   ip route show
   ```
2. **Add a Default Gateway**:

   ```sh
   ip route add default via 192.168.1.1
   ```
3. **Add a Route to a Specific Network**:

   ```sh
   ip route add 192.168.2.0/24 via 192.168.1.1
   ```
4. **Add a Host Route**:

   ```sh
   ip route add 192.168.1.2 via 192.168.1.1
   ```
5. **Delete a Route**:

   ```sh
   ip route del 192.168.2.0/24
   ```

#### Conclusion

While the `route` command is still available and useful for simple routing table manipulations, it is recommended to use the `ip` command for more advanced and modern network configuration tasks. The `ip` command offers a unified and consistent interface for managing both IP addresses and routes, making it a more powerful and flexible tool for network administrators.

## help

```
Usage: route [-nNvee] [-FC] [<AF>]           List kernel routing tables
       route [-v] [-FC] {add|del|flush} ...  Modify routing table for AF.

       route {-h|--help} [<AF>]              Detailed usage syntax for specified AF.
       route {-V|--version}                  Display version/author and exit.

        -v, --verbose            be verbose
        -n, --numeric            don't resolve names
        -e, --extend             display other/more information
        -F, --fib                display Forwarding Information Base (default)
        -C, --cache              display routing cache instead of FIB

```

### breakdown

```
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://linux-tutorial-cli.gitbook.io/linux-cli-tutorial/txt-files/route.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.