IT 244: Introduction to Linux/Unix

IT 244: Introduction to Linux/Unix
Homework 4

Due

Sunday, February 23rd at 11:59 PM

What You Need to Do

Create the script hw4.sh with Unix commands that will do what is described in the steps below
This file must be in an hw4 directory under your hw directory

Setup

From your home directory go to your it244 directory
```
cd it244
```
Go to your hw directory
```
cd hw
```
Create an hw4 directory
```
mkdir hw4
```
Enter this new directory
```
cd hw4
```
Create hw4.sh
```
nano hw4.sh
```

Specification

Run nano to create hw4.sh
Into this file write the Unix commands for each step
The commands for each step must by labeled with a Step number
Write # followed by the word "Step" and the step number

Using one Unix command, go to my home directory using tilde, ~.
Run pwd.
Using one Unix command, go to your home directory using tilde, ~.
Run pwd.
You should be in your home directory.
Using one Unix command, go to your hw4 directory inside your hw directory, inside your it244 directory using a relative pathname.
Run pwd.
Using one Unix command, go to my home directory using an absolute pathname.
Run pwd.
Using one Unix command, go to the it244_files directory inside the course_files directory, inside my home directory, using an absolute pathname.
Run pwd.
Using one Unix command, go to my home directory using relative pathname using one or more instances of .. .
Run pwd.
Using one Unix command, go to your home directory.
Once you are there go to your it244 directory using a relative pathname.
Run pwd.
You should be in your it244 directory.
Using touch create a file named test.txt.
Go to your hw4 directory.
Run pwd.
Using .. stay in your hw4 directory but list the contents of your it244 directory.
Stay in your hw4 directory and copy the test.txt file from your it244 directory to your hw4 directory using a relative pathname.
Run pwd.
Run ls.
Using one Unix command go to your home directory.
Run pwd.
Using one Unix command, copy the test.txt file from your it244/hw/hw4 directory to your home directory.
Run ls.

Testing

There are two tests that your should run on your script
The first test checks for Unix errors
Run bash on your script like this
```
bash hw4.sh > /dev/null
```
This will run your script but will only show error messages
If you see nothing, your script has passed this test
The second test checks your Step comments

Run it like this

~ghoffman/code/it244_code/testing_scripts_it244/step_comment_check.sh

When you run this script you must supply your username and homework number
If your Step comments are wrong you will lose points
Run you script
```
bash hw4.sh
```

You should see

/home/ghoffman
/home/YOUR_USERNAME
/home/YOUR_USERNAME/it244/hw/hw4
/home/ghoffman
/home/ghoffman/course_files/it244_files
/home/ghoffman
/home/YOUR_USERNAME/it244
/home/YOUR_USERNAME/it244/hw/hw4
ex  hw	test.txt
/home/YOUR_USERNAME/it244/hw/hw4
hw4.sh	test.txt
/home/YOUR_USERNAME
bin   hw1_piazza_filename_create.py  names_emails.txt
bugs  hw4.py                         numbers_jumbled.txt
...

Where you see YOUR_USERNAME substitute your Unix username