Which command is used in a Linux environment to create a new directory? (Specify ONLY the command without any path or parameters.)

Which of the following commands determines the type of a file by using a definition database file which contains information about all common file types? A. magic B. type C. file D. pmagic E. hash

Which variable defines the directories in which a Bash shell searches for executable commands? A. BASHEXEC B. BASHRC C. PATH D. EXECPATH E. PATHRC

Which of the following command sets the Bash variable named TEST with the content FOO? A. set TEST="FOO" B. TEST = "FOO" C. var TEST="FOO" D. TEST="FOO"

What happens after issuing the command vi without any additional parameters? A. vi starts and loads the last file used and moves the cursor to the position where vi was when it last exited. B. vi sta...

Which of the following signals is sent to a process when the key combination CTRL+C is pressed on the keyboard? A. SIGTERM B. SIGINT C. SIGSTOP D. SIGKILL

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...