Ubuntu

今天談談Ubuntu下面建立用戶以及ssh

Sat Jan 24 17:15:22 PST 2015

添加用戶

直接上碼

useradd <username>
passwd <username>
sudo adduser <username> sudo 
mkdir /home/<username>
chown -R <username>:users /home/<username>

ssh

再貼一個one liner
當然了rsa_id必須是 chmod 600

-rw-------    1 user     user         526 Dec 25 06:59 identity
-rw-r--r--    1 user     user          330 Dec 25  06:59 identity.pub

cat ~/.ssh/id_rsa.pub | ssh server_alias 'cat >> ~/.ssh/authorized_keys'

PS: server_alias 是從.ssh/config裡面設置好的

如果報錯如下
sh: 1: cannot create /home/<username>/.ssh/authorized_keys: Directory nonexistent

直接這個
cat ~/.ssh/id_rsa.pub | ssh server_alias 'mkdir -p ~/.ssh && touch ~/.ssh/authorized_keys && cat >> .ssh/authorized_keys'

Zsh

換shell

sudo apt-get install zsh
sudo chsh -s /usr/bin/zsh

Reference

1. The Complete Guide to "useradd" Command in Linux - 15 Practical Examples
2. HOWTO/SSH-with-Keys
3. scp ssh passwordless
4. SSH and SCP: Howto, tips & tricks | Linux Academy Blog