To do this without leaving vi, you type:

Using vi, you want to save changes to the file my file 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:

Using vi, you want to save changes to the file my file 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

Explanation:
You can execute the external commands in vi editor using :! command . Example: !ls -l displays
all contents of current directory.



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