Display the current date Use the linux command to show your current group membership Create a new file called "Assign3-1.txt". Remove the read permissions using the octal notation method so that only the Owner has read permission. Create a new file called "Assign3-2.txt". Same as above, but use the symbolic notation Create three new groups called "engr","sales", and "engr-sales" Create two new users called "bob" and "sue" Put bob in the engr and engr-sales groups and put sue in the sales and engr-sales groups. Use the linux command to verity their group memberships Create a new folder called "SharedEngrSales". Configure it so that users from the engr-sales group can share documents for both read and write among themselves Start the following long-running process: "tree / > tree.out". Quickly, before it finishes, pause the process and put it in the background. Type a command (perhaps "Is") and then bring the background process to the foreground (That might be tricky to capture) Start another long-running process (same as above). Pause the process and then kill it Display the list of environmental variables (without showing aliases and functions) Display a list of systemd services that are currently configured