Several problems encountered in setting up the environment in the past two days

1、 Command line prompt PS1

https://www.freesion.com/article/84921342965/

2、update upgrade And other instructions have errors

https://blog.csdn.net/qingfengxiaosong/article/details/87889995

3、 notes cdrom Some questions

https://blog.csdn.net/PurpleGalaxy/article/details/39495033

4、Error: FEC1 address not set.

https://blog.csdn.net/m0_46291920/article/details/112961814

5、 Temporary modification ip gateway Mask mac dns

ifconfig eth0 192.168.1.100  netmask 255.255.255.0

route add default gw 192.168.1.1

Restart and take effect

vim  /etc/sysconfig/network-scripts/ifcfg-eth0
Add or modify the following lines   
BOOTPROTO=static
IPADDR=192.168.1.100
NETMASK=255.255.255.0

vim /etc/sysconfig/network
  Add or modify the following line
 GATEWAY=192.168.1.1

vim /etc/resolv.conf
Add the following line
nameserver 202.96.134.133

6、 Unable to install virtualbox Install enhancements

eject Then install

7、virtualbox Shared files

sudo mount -t vboxsf Share share_dir

https://blog.csdn.net/jumpingpig/article/details/104109395

8、MobaXterm ssh Transfer files