On Red Hat Linux and its derivatives, which of the following commands will be appropriate to check whether a particular "package" is installed or not?

To read one or more files and type them on standard output, you use:

What command can be used to delete a directory, recursively searching for files and other directories and deleting them?

/etc/resolv.conf is ...

To transfer files in an insecure way to and from a remote network site host, you use the command:

The command du -h ~

An rsyslogd filter determines which items in a log file to act on. What is it made up of?

Which option would you choose to force grep to use a basic regular expression (BRE)?

What issue might a user have when they mount a filesystem by partition path such as /dev/sdal in the /etc/fstab file?

Using a systemd-based distribution, you want to restrict the cron service from running either automatically or manually. Which command would you run?

What will this command print? echo "Thu Jun 4 15:45:45 PDT 2020" | cut -f3 -d" "