The command echo $! will produce what output?

Which file, when using Sendmail or a similar MTA system, will allow a user to redirect all their mail to another address and is configurable by the user themselves?

Which of the following provides a nongraphical, text based interface for users who are visually impaired that can be used as a screen reader?

In the following command and its output, echo $$ 12942 what is 12942?

Given the following output:
prompt> myapp [1]+ Stopped myapp prompt>

Which of the following commands will resume executing the stopped process while allowing the user to continue to type commands at the command prompt?

Which of the following commands will display the last 30 lines of /var/log/bigd.log as well as new content as it is appended to the file by another process?

Which of the following configuration lines will export /usr/local/share/ to nfsclient with read-write access, ensuring that all changes are written straight to the disk?

Which of the following words is used to restrict the records that are returned from a SELECT query based on a supplied criteria for the values in the records?

In order to save and restore your sound card’s configuration between sessions, the ALSA sound system uses what program?