IT 244: Introduction to Linux/Unix

IT 244: Introduction to Linux/Unix
Homework 5

Due

Sunday, February 25th at 11:59 PM

What You Need to Do

Create the script hw5.sh with Unix commands that will do what is described in the steps below
This file must be in an hw5 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 hw5 directory
```
mkdir hw5
```
Enter this new directory
```
cd hw5
```
Create hw5.sh
```
nano hw5.sh
```

You Must Use Numeric Format When Using `chmod`

The chmod command is used to change the permissions on a file or directory
You can specify the permissions to be given with digits, like 755, or characters
You MUST use digits in this assignment
The character, or symbolic method, take too much time for me to score

Specification

Create the file hw5.sh inside your hw5 directory using nano
Write the Unix command to perform the action specified by each step
Be sure to write a Step comment before the Unix commands for each step

Using touch create a file named work.sh in your hw5 directory.
Give this file read and write permission (no execute permissions) for you alone.
No other account should have any access privileges to this file.
Change the permissions on the work.sh file so you have read and write permissions.
Give everybody else, including the group, read permissions only.
Give yourself read, write and execute permissions to the file work.sh.
Give everyone else, including the group, execute permissions only.
Create a directory named dir1 in your hw5 directory.
Give all users read, write and execute access to this directory.
Create a directory named dir2 in your hw5 directory.
Give yourself read, write and execute permissions on this directory.
Give the group and everyone else only those permissions which will let them run ls on this directory, but nothing else.
Create a directory named dir3 in your hw5 directory.
Give yourself full permissions to this directory.
Give only the group the ability to run ls on this directory and to cd into it.
Give everyone else no privileges on this directory.
You should be in your hw5 directory.
Create a symbolic link named homework in your current directory to your hw directory.
Use the homework link you just created to go to your hw directory.
Go back to your hw5 directory.
Show the true location of this directory in the /courses hierarchy.
Go to your home directory.
Perform a long listing to see the absolute pathname of your it244 directory.
cd into this directory using an absolute pathname.
This pathname must include the /courses directory.
Show your new location.

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 hw5.sh > /dev/null
```

If you run this command a second time, you will get the following error messages, which you can ignore

mkdir: cannot create directory ‘dir1’: File exists
mkdir: cannot create directory ‘dir2’: File exists
mkdir: cannot create directory ‘dir3’: File exists

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

If your Step comments are wrong you will lose points

IT 244: Introduction to Linux/Unix Homework 5

Due

Sunday, February 25th at 11:59 PM

What You Need to Do

Setup

You Must Use Numeric Format When Using chmod

Specification

Testing

IT 244: Introduction to Linux/Unix
Homework 5

You Must Use Numeric Format When Using `chmod`