ArchLinux

把ArchLinux装起来了。（其中用到了163.镜像源）

安装好之后，发现没有ssh服务。

 1、需要安装ssh服务

 1.1 pacman -Sy openssh          --安装程序是pacman，不是 apt-get 或 yum

 1.2 编辑 /etc/ssh/sshd_config，把#PermitRootLogin prohibit-password 改为 PermitRootLogin yes   

 1.3 启动服务 systemctl start sshd  --用的服务管理程序 systemd服务来代替daemon

原本在/etc/init.d/目录下的启动文件，被/lib/systemd/system/下相应的文件所取代

daemon命令systemctl命令说明service [服务] startsystemctl start [unit type]启动服务service [服务] stopsystemctl stop [unit type]停止服务service [服务] restartsystemctl restart [unit type]重启服务设置开机启动/不启动daemon命令systemctl命令说明chkconfig [服务] onsystemctl enable [unit type]设置服务开机启动chkconfig [服务] offsystemctl disable [unit type]设备服务禁止开机启动systemctl命令说明systemctl列出所有的系统服务systemctl list-units列出所有启动unitsystemctl list-unit-files列出所有启动文件systemctl list-units –type=service –all列出所有service类型的unitsystemctl list-units –type=service –all grep cpu列出 cpu电源管理机制的服务systemctl list-units –type=target –all列出所有targetsystemctl命令说明systemctl is-active [unit type]查看服务是否运行systemctl is-enable [unit type]查看服务是否设置为开机启动systemctl mask [unit type]注销指定服务systemctl unmask [unit type]取消注销指定服务init命令systemctl命令说明init 0systemctl poweroff系统关机init 6systemctl reboot重新启动systemctl命令说明systemctl suspend进入睡眠模式systemctl hibernate进入休眠模式systemctl rescue强制进入救援模式systemctl emergency强制进入紧急救援模式init级别systemctl target0shutdown.target1emergency.target2rescure.target3multi-user.target4无5graphical.target6无systemctl命令说明systemctl get-default获得当前的运行级别systemctl set-default multi-user.target设置默认的运行级别为mulit-usersystemctl isolate multi-user.target在不重启的情况下，切换到运行级别mulit-user下systemctl isolate graphical.target在不重启的情况下，切换到图形界面下