Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.) A. uptime B. up C. top D. uname -u E. time -up

When given the following command line. echo "foo bar" | tee bar | cat Which of the following output is created? A. cat B. foo bar C. tee bar D. bar E. foo

When running the command sed -e "s/a/b/" /tmp/file >/tmp/file While /tmp/file contains data, why is /tmp/file empty afterwards? A. The file order is incorrect. The destination file must be mentione...

Which of the following commands prints all files and directories within the /tmp directory or its subdirectories which are also owned by the user root? (Choose TWO correct answers.) A. find /tmp -uid...

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