Use cat to find out which shell type is not available on the current Linux system.

Answer question $1.$

Use df to find out what percentage of space is being used by $/$dev$/$sda$1.$

Answer question $2.$

Use fdisk to find out which partition is the boot partition.

Answer question $3.$

Use grep to search the $/$etc$/$group file for groups to which fparker belongs.

Answer Question $4$

Answer Question $1.$

View the contents of the $/$root$/.$bash$\_$profile file.

Answer Question $2.$

Display the status of the SHELL environmental variable.

Answer Question $3.$

List the iptables firewall rules.

Answer Question $4.$

Use nano to change the value to $10$ seconds.Write the change to the grub.cfg file.Reboot the operating system to verify the change to the wait time from the GRUB menu.