Cheats.md

# Сколько включена машина

$ uptime                                    
 14:26:14 up 6 days, 23:20,  1 user,  load average: 1,18, 1,58, 1,88

# Все запущенные серверы, использующие TCP/IP

$ netstat -lnt

# Узнать свой ip-адрес в локальной сети

$ ifconfig
br-1d7c88a3dc61: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.18.0.1  netmask 255.255.0.0  broadcast 172.18.255.255
        ether 02:42:8a:a2:e0:25  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:f9:77:8e:0b  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp3s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 172.27.0.88  netmask 255.255.252.0  broadcast 172.27.3.255
        inet6 fe80::f02a:463d:ca07:4cf1  prefixlen 64  scopeid 0x20<link>
        ether 50:46:5d:9e:2a:79  txqueuelen 1000  (Ethernet)
        RX packets 13738931  bytes 11161583730 (11.1 GB)
        RX errors 0  dropped 1  overruns 0  frame 0
        TX packets 3980925  bytes 448023029 (448.0 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
...

# Получить ip-адрес по имени хоста

$ host owa.i-free.com
owa.i-free.com has address 172.27.206.33