finger root

------------------------------------------- ========= 清除用户的口令 =========   passwd -d  user  ------------------------------------------- ========== 可以同时创建目录 ==========   mkdir -p  ------------------------------------------- ========== ssh命令 ==========   ssh -p 12333 root@216.230.230.114 -------------------------------------------- ========== kill命令 ==========   终止httpd程序： killall httpd   强制终止httpd程序： killall -9 httpd   ---------------------------------------------- ================== 找出passwd中的所有用户名 ==================   cut -d ‘:’ -f1 /etc/passwd ----------------------------------------------- ======== 语言设置 ========   vi /etc/sysconfig/i18n etc/default/locale ------------------------------------------------ ubuntu切换到root ============ sudo -s   ------------------------------------------------ ubuntu的ssh安装 =========== apt-get install openssh-server   ------------------------------------------------ debian新加网卡 =========== rm /etc/udev/rules.d/70-persistent-net.rules   ------------------------------------------------- rpm安装 =========== rpm -ivh nmap*******.rpm   --------------------------------------------------- namp的使用 ========== nmap -sT 192.168.1.1 扫描此ip开放的端口 nmap -sT  -P0 -p 80 192.168.1.1 扫描此ip的80端口是否开放,-P0表示ping无响应也探测端口。   --------------------------------------------------- linux默认路由 ========== /etc/sysconfig/network   NETWORKING=yes  GATEWAY=192.168.0.1 ---------------------------------------------------- 启动自动执行命令： ============ /etc/rc.d/rc.local   route   add   default   gw   x.x.x.x   dev   eth0 ------------------------------------------------------ linux时钟设置 ========== date -s 11/30/2011 date -s 12：37：00 ------------------------------------------------------