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Which of the following commands installs GRUB 2 into the master boot record on the third hard disk?
Answer : E
Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?
Answer : B
Which of the following regular expressions represents a single upper-case letter?
Answer : B
Given a log file loga.log with timestamps of the format DD/MM/YYYY:hh:mm:ss, which command filters out all log entries in the time period between 8:00 am and 8:59 am?
Answer : E
Which of the following commands redirects the output of ls to standard error?
Answer : C