CompTIA A+ 220-902

Category - Other Operating Systems and Technologies

What command in Linux is used to change permissions on a file?
  1. dir
  2. grep
  3. cd
  4. chmod
Explanation
Answer: D - The chmod command is used in Linux to change file permissions.

The chmod command is followed by a list of numbers that indicate permissions on a file. These permissions should be changed carefully, because the wrong permission can make files and the server vulnerable to attackers.
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