Introduction to UNIX ==================== LAB EXERCISE #6 =============== Create a directory named "lab6" and change to that directory. All work should be done in that directory. 1. Create a variable called "abc" and assign the string "Hello out there". Use echo command to display the contents of the variable "abc". 2. Create a file called file_1 with three lines of text in it. Create a shell variable called "f1", assign to it the string "file_1". Use the cat command and the variable "f1" to display the contents of the file "file_1". 3. Set the shell variable "astring" such that if you type the command "echo $astring" at the prompt, you will get the following output: Hello, my name is "gsmith" and I have $5.00 4. Repeat this but output the following: Don't do that 5. Change your prompt so that it reads "Enter a command". Create a sub-shell by typing the command "ksh". What does your prompt look like? Type "exit" to end the sub-shell. Your prompt should be "Enter a command" again. Type "export PS1". Type "ksh". What does your prompt look like now? (Don't forget to exit your sub-shell). 6. Use "env" to look at all your environment variables.