`!_`5 81_09

Create t1.sh in /home/vandy/crontab directory#!/bin/shecho "=============`date`=================" >> /home/vandy/test1.logenv >> /home/vandy/test1.logWe can see the outputs in test1.log fileCreate c

1)ALT+F2gksuadd-apt-repository ppa:mozillateam/firefox-stableCHECK RUN INTERMINALRUN2)ALT+F2gksu apt-getupdateCHECK RUN INTERMINALRUN3)ALT+F2sudo apt-getinstall firefoxCHECK RUN INTERMINALRU

Install openssh-client firstsudo apt-get install openssh-clientSupposeComputer A(192.168.1.111), Computer B(192.168.1.123)Login Computer Assh-keygen -t [rsa|dsa]this will generate: id_rsa, id_rsa.pub

本文以ubuntu 14.04 64位为例1). 开机长按左上角Esc键，进入GRUB界面，选择高级选项如下图2). 选择recovery mode，如下图3). 选择root Drop to root shell prompt，如下图4). 如果用户名也忘记了，可以通过命令cat /etc/shadow来查找，否则可直接进入第5步cat /etc/shadow5). 输入命令passwd “用户名

Ubuntu设置root密码终端输入sudo passwd root，在[sudo] password for landry:后输入当前用户的密码当前用户密码验证通过后输入需要设置的root超级管理员账户密码Enter new UNIX password:验证输入的密码Retype new UNIX password:出现passwd: password updated succe...