Linux常用操作

设置盖上盖子不休眠

• 编辑文件/etc/systemd/logind.conf

$ vi /etc/systemd/logind.conf

• 将#HandleLidSwitch=suspend改为HandleLidSwitch=lock

• 重启服务生效

$ systemctl restart systemd-logind

设置密钥登录

CentOS 7.6

1. 上传或者生成密钥

• 本地上传

scp -P <端口> id_rsa.pub root@<服务器地址>:~

• 生成

ssh-keygen -t rsa -C "xxxxxxx@email.com" -f ./id_rsa

2. 安装并设置密钥权限

mkdir -p /root/.ssh && cd /root/.ssh \
&& cat ~/id_rsa.pub >> authorized_keys \
&& chmod 600 authorized_keys \
&& chmod 700 ~/.ssh

3. 备份配置文件

cp /etc/ssh/sshd_config /etc/ssh/sshd_config.bak

4. 删除配置项

sed -i '/PasswordAuthentication.*/d' /etc/ssh/sshd_config \
&& sed -i '/PubkeyAuthentication.*/d' /etc/ssh/sshd_config \
&& sed -i '/RSAAuthentication.*/d' /etc/ssh/sshd_config \
&& sed -i '/AuthorizedKeysFile.*/d' /etc/ssh/sshd_config

5. 以追加内容的方式新增配置

echo PasswordAuthentication no >> /etc/ssh/sshd_config \
&& echo PubkeyAuthentication yes  >> /etc/ssh/sshd_config \
&& echo RSAAuthentication yes >> /etc/ssh/sshd_config \
&& echo AuthorizedKeysFile .ssh/authorized_keys >> /etc/ssh/sshd_config

6. 重启sshd服务

systemctl restart sshd