/server_tips

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(C) 2023 long-910
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server_tips

Ubuntu Server 22.04.2 LTSをインストール後の設定を残す。

Add User

Add New User

$ sudo adduser User_Name
$ ls -l /home
$ sudo gpasswd -a User_Name sudo

Delete ubuntu user

$ sudo userdel -r ubuntu

Install Apps

tmux

$ sudo apt install tmux
$ which tmux
$ curl https://raw.githubusercontent.com/long-910/home/main/.tmux.conf > .tmux.conf

zsh

$ sudo apt install zsh
$ which zsh
$ chsh
Changing the login shell for long910
Enter the new value, or press ENTER for the default
	Login Shell [/bin/bash]: /usr/bin/zsh
#Logout/Login
$ echo $SHELL
/usr/bin/zsh
$ curl https://raw.githubusercontent.com/long-910/home/main/.zshrc > .zshrc
$ source .zshrc

emacs

$ sudo apt install emacs
$ which emacs
$ curl https://raw.githubusercontent.com/long-910/home/main/.emacs.el > .emacs.el

Setting SSH

公開鍵を Ubuntu に SCP で送付,登録

# SCPでサーバーに公開鍵を送付
$ mkdir .ssh
$ cat id_rsa.pub > ~/.ssh/authorized_keys
$ chmod 600 .ssh/authorized_keys

Config設定

$ sudo emacs /etc/ssh/sshd_config
-#Port 22
+Port 2222

-#PermitRootLogin prohibit-password
+PermitRootLogin no

-#PubkeyAuthentication yes
+PubkeyAuthentication yes

-#PermitEmptyPasswords no
+PermitEmptyPasswords no

sshdを再起動

$ sudo service ssh restart

ufw

$ sudo apt-get install ufw
$ sudo ufw allow 2222/tcp
$ sudo ufw enable