Using vi， you want to save changes to the file myfile with ：w!， but vi complains it cannot write to the file. Therefore， you want to check the write permissions on the file. To do this without leaving vi， you type：（）A、 ：!ls-I myfileB、 ：/ls-l myfileC、 esc
题目
Using vi， you want to save changes to the file myfile with ：w!， but vi complains it cannot write to the file. Therefore， you want to check the write permissions on the file. To do this without leaving vi， you type：（）
- A、 ：!ls-I myfile
- B、 ：/ls-l myfile
- C、 esc ：Is -I myfile
- D、 ：？ls-l myfile
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参考答案和解析
正确答案:A