To change mode of myfile to 'rwxr–r–'  , the

Solution

The "chmod" command is used to change the permissions of a file or directory. In this case, the "myfile" is being changed to "rwxr--r--", which means the owner has read, write, and execute permissions, while the group and others have only read permission. The numbers in the command represent the permissions in octal form, with the first digit representing the owner's permissions, the second digit representing the group's permissions, and the third digit representing others' permissions.