Vim保存只讀模式下的修改

用 vim 打開沒有寫權限的文件而忘記用 sudo 時，文件變成 read-only
這時候用 :w!, SHIFT+ZZ，或者 qw! 都無法保存

:w !sudo tee %

:w : Write a file.可以將文件寫入，文件仍然是只讀模式，通過 :q! 退出

• !sudo : Call shell sudo command.
• tee : The output of the vi/vim write command is redirected using tee.
• % : Triggers the use of the current filename.

Simply put, the ‘tee’ command is run as sudo and follows the vi/vim command on the current filename given.

 

 

ref: http://gece.coding.me/2016-04-21-vim%E4%BF%9D%E5%AD%98%E5%8F%AA%E8%AF%BB%E6%A8%A1%E5%BC%8F%E4%B8%8B%E7%9A%84%E4%BF%AE%E6%94%B9/