Solutions

1.	#!/bin/ksh
	echo "Enter your first name: \c"
	read firstname
	echo "Enter your last name: \c"
	read lastname
	echo "$lastname, $firstname"

2.	In .profile:

	       who
	       date
	       cal

3.	#!/bin/ksh
	num=`who|wc -l`
	echo There are $num users currently logged in.

4.	#!/bin/ksh
	num=`who|wc -l`
	if [ $num -lt 5 ] ; then
	   echo Less than five logged on.
	else
	   echo Five or more logged on.
	fi

	Suppose there are 12 people currently logged on.  Then change the 5
	to a 13 (and change your messages), then run it again.
	
5.	/etc $v $v v

6.	In .profile:

	PATH=$PATH:$HOME/bin
