Ubuntu问题：E45: 'readonly' option is set (add ! to override)错误解决

问题描述：E45: 'readonly' option is set (add ! to override)

问题分析：该错误为当前用户没有权限对文件作修改

问题解决：

输入　　:w !sudo tee %

• :w – write
• !sudo – call shell sudo command
• tee – the output of write (:w) command is redirected using tee
• % – current file name