在Linux系统中，查看路由信息是非常重要的，因为它可以帮助我们了解网络连接的详细情况，本文将介绍如何在Linux系统中查看路由信息，包括使用`route`命令、`ip route`命令和`netstat`命令等方法。

1. 使用`route`命令查看路由信息

`route`命令是Linux系统中最早的路由工具，它可以显示系统的路由表信息，要查看路由信息，只需在终端中输入以下命令：

route -n

运行该命令后，你将看到类似如下的输出：

Kernel IP routing tableDestination      Gateway         Genmask         Flags Metric Ref   Use Iface0.0.0.0              192.168.1.1     0.0.0.0           UG    100    0 0 eth0192.168.1.0          0.0.0.0     255.255.255.0       U     100    0 0 eth1

这个输出显示了两个路由条目：一个是默认网关(192.168.1.1),另一个是本地回环地址(192.168.1.0)。

2. 使用`ip route`命令查看路由信息

`ip route`命令是现代Linux系统中常用的路由工具，它的语法与`route`命令类似，要查看路由信息，只需在终端中输入以下命令：

ip route show

default via 192.168.1.1 dev eth0 proto static metric 100 mtu 1500 metric 100192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.1 metric 100 mtu 1500

3. 使用`netstat`命令查看路由信息

`netstat`命令是一个非常实用的网络工具，它不仅可以显示网络连接信息，还可以显示路由表信息，要查看路由信息，只需在终端中输入以下命令：

netstat -rn

Routing Table: IPv4 (Static) Routes for eth0 and eth1 interfacesdestination            gateway         netmask         flags         ref     use     interface         metric       mtu        bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms       bytes     packets                drops        overruns        frame      collisions         carrier       metric       time             ms      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      34736      4736      85899552           us                 unspec             ull                  dev            lo: <LOOPBACK,UP,LOWER_UP> mtu                    550 qdisc noqueue state UNKNOWN group default qlen    1000 jump rto_postoverlimit 0                      rt_min_qtime          ms                  rt_max_qtime          ms                   rt_sdelay          us                  rt_rdelay          us                   rt_msgrcv_interval     us                   rt_shrink_factor      none                  defruct          128                  gathcet          0                  cache_mem          128                  not_collectible          0                  refcnt                0                  is_kernel_input          0                  is_drv_internal          0                  is_ffc          0                  is_fsc          0                  is_from_unicast          0                  is_dgrm          0                  is_from_global unicast          0                  is_mptcp          0                  is_from_reassembly          0                  is