Which of the following commands prints a list of usernames (first column) and their primary group (fourth column) from the /etc/passwd file? A. fmt -f 1,4 /etc/passwd B. split -c 1,4 /etc/passwd C. c...

Which of the following commands will print the last 10 lines of a text file to the standard output? A. cat -n 10 filename B. dump -n 10 filename C. head -n 10 filename D. tail -n 10 filename

Which character, added to the end of a command, runs that command in the background as a child process of the current shell? A. ! B. + C. & D. % E. #

Which of the following commands will reduce all consecutive spaces down to a single space? A. tr '\s' ' ' < a.txt > b.txt B. tr -c ' ' < a.txt > b.txt C. tr -d ' ' < a.txt > b.txt D...

When starting a program with the nice command without any additional parameters, which nice level is set for the resulting process? A. -10 B. 0 C. 10 D. 20

Which of the following sequences in the vi editor saves the opened document and exits the editor? (Choose TWO correct answers.) A. esc ZZ B. ctrl :w! C. esc zz D. esc :wq! E. ctrl XX

In the vi editor, which of the following commands will copy the current line into the vi buffer? A. c B. cc C. 1c D. yy E. 1y

Which of the following shell redirections will write standard output and standard error output to a file named filename? A. 2>&1 >filename B. >filename 2>&1 C. 1>&2>file...

Which shell command is used to continue background execution of a suspended command? A. & B. bg C. cont D. exec E. :&

Regarding the command: nice -5 /usr/bin/prog Which of the following statements is correct? A. /usr/bin/prog is executed with a nice level of -5. B. /usr/bin/prog is executed with a nice leve...