To quit the vi editor without saving any changes you've made If you are currently in insert or append mode, press Esc . Press : (colon). The cursor should reappear at the lower left corner of the screen beside a colon prompt. Enter the following: q!
问题来源如下: 打开/etc/crontab文件,命令如下: yule@yule-ubuntu:~$ vi /etc/crontab 显示如下内容: # /etc/crontab: system-wide crontab# Unlike any other crontab you don't have to run the `crontab'# command to install the new version when you edit this file# and files in /e