Which of the following commands redirects the output of ls to standard error?
Which of the following commands displays the contents of a gzip compressed tar archive?
Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file?
Which of the following regular expressions represents a single upper-case letter?
FILL BLANK -Which command is used to start another command with a given nice level? (Specify ONLY the command without any path or parameters.)
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?
