關於Linux一些命令說明

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# systemctl #輸出已激活單元 
# systemctl list-units #輸出已激活單元 
# systemctl --failed #輸出運行失敗的單元 
# systemctl list-unit-files #查看所有已安裝服務 
# systemctl start nginx #啓動nginx 
# systemctl stop nginx #停止nginx 
# systemctl restart nginx #重啓nginx 
# systemctl reload nginx #重新加載nginx配置 
# systemctl status nginx #輸出nginx運行狀態 
# systemctl is-enabled nginx #檢查nginx是否配置爲自動啓動 
# systemctl enable nginx #開機自動啓動nginx 
# systemctl disable nginx #取消開機自動啓動nginx 
# systemctl help nginx #顯示nginx的手冊頁 
# systemctl daemon-reload #重新載入 systemd，掃描新的或有變動的單元 
# systemctl reboot #重啓 
# systemctl poweroff #退出系統並停止電源 
# systemctl suspend #待機 
# systemctl hibernate #休眠 
# systemctl hybrid-sleep #混合休眠模式（同時休眠到硬盤並待機 
# systemctl isolate graphical.target #等價於telinit 3 或 telinit 5