Which of the following settings for umask ensures that new files have the default permissions -rw-r----- ? A. 0017 B. 0640 C. 0038 D. 0027

What does the command mount -a do? A. It ensures that all file systems listed with the option noauto in /etc/fstab are mounted. B. It shows all mounted file systems that have been automatically mo...

Which of the following commands can be used to search for the executable file foo when it has been placed in a directory not included in $PATH? A. apropos B. which C. find D. query E. whereis

Which of the following commands makes /bin/foo executable by everyone but writable only by its owner? A. chmod u=rwx,go=rx /bin/foo B. chmod o+rwx,a+rx /bin/foo C. chmod 577 /bin/foo D. chmod 775 /bi...

After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of existing applications? (Choose TWO correct answers.) A. By creating an A...

After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation? A. foo and bar would both be...

Which of the following are valid stream redirection operators within Bash? (Choose THREE correct answers.) A. < B. <<< C. > D. >>> E. %>

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...