Ubuntu newly installed configuration

[TOC]

Ubuntu newly installed configuration

First, the configuration apt source

1, 备份 ubuntu

• mv /etc/apt/sources.list /etc/apt/sources.list.bak

2, source disposed Tsinghua

• su root
  cat > /etc/apt/sources.list <<EOF
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
  deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
  deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
  EOF

3, update source

• sudo apt-get update
  sudo apt-get upgrade -y

Second, install the necessary software

sudo apt-get install curl wget vim ssh -y

Third, configure ssh

1, open the root remote login

vim /etc/ssh/sshd_config
PermitRootLogin yes #取消注释

2, restart the ssh service

systemctl enable ssh
systemctl start ssh

Fourth, turn off the banner displayed when ubuntu ssh connection

1, closed this is mainly to prevent leakage of some system information

sudo sed -i '/pam_motd.so/ s/^/#/g' /etc/pam.d/sshd 

#就是为了注释下面两行，不让他们在现实开机信息
#session    optional     pam_motd.so  motd=/run/motd.dynamic
#session    optional     pam_motd.so noupdate

Fifth, the color configuration terminal

vim ~/.bashrc
export PS1="\[\033[01;31m\]\u\[\033[00m\]@\[\033[01;32m\]\h\[\033[00m\][\[\033[01;33m\]\t\[\033[00m\]]:\[\033[01;34m\]\w\[\033[00m\]\n$ "

#生效
source ~/.bashrc