- How to renew or release a Dynamic IP address in Linux
- 通过 pid 查看占用端口
- How to set up swap space?
- Network
How to renew or release a Dynamic IP address in Linux
The DHCP client in Linux is called dhclient. It requests dynamic IP addresses from the DHCP server, which “leases” addresses to clients for a set amount of time. dhclient can be invoked manually to “release” the client’s currently assigned IP address, and get another address from the DHCP server.
sudo dhclient -v
sudo dhclient wlan0
sudo dhclient -r wlan0
https://www.computerhope.com/issues/ch001078.htm
通过 pid 查看占用端口
netstat -anp
How to set up swap space?
If you want to re-add this service to be started on boot up
$ sudo update-rc.d dphys-swapfile defaults
修改配置文件
$ sudo nano /etc/dphys-swapfile
CONF_SWAPSIZE=1024
重启服务
$ sudo dphys-swapfile setup
$ sudo dphys-swapfile swapon
检查 swap 内存空间
$ sudo swapon -s
References
- https://raspberrypi.stackexchange.com/questions/70/how-to-set-up-swap-space
Network
Assign Static IP
修改下面 Network Interfaces 文件，为每个 interface 指定 IP 类型，最好每个 interface 都设置上及时他有默认行为
sudo nano /etc/network/interfaces
auto enp0s3
iface enp0s3 inet dhcp
auto enp0s8
iface enp0s8 inet static
address 192.168.99.100
netmask 255.255.255.0
network 192.168.99.0
broadcast 192.168.99.255
Change hostname on Ubuntu 18 04
https://websiteforstudents.com/updating-changing-the-hostname-on-ubuntu-18-04-beta-server/
Network
ip addr show
iptables
https://docs.docker.com/network/iptables/
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