COMPUTER SCIENCE AND ENGINEERING
UNIX
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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He can open the file and view its contents, but he can’t save any changes.
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He can open the file, make changes, and save the file.
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He can change ownership of the file.
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He can run the file if it’s an executable.
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Detailed explanation-1: -A file named employees. odt has a mode of rw-r–r–. If rtracy is the file’s owner, what can he do with it? He can open the file and view its contents, but he can’t save any changes.
Detailed explanation-2: -Type chmod permissions file to change permissions of a file or directory.
Detailed explanation-3: -In the example-rw-r–r–, the owner permissions are rw-, indicating that the owner can read and write to the file but can’t execute it as a program. In the example drwxr-xr-x, the owner permissions are rwx, indicating that the owner can view, modify, and enter the directory.
Detailed explanation-4: -Execute permission allows the user to enter the directory and access any subdirectories.
Detailed explanation-5: -We can use the ‘chmod’ command which stands for ‘change mode’. Using the command, we can set permissions (read, write, execute) on a file/directory for the owner, group and the world.