Connecting to a Unix machine from MacOS

The Mac comes already has the software you will need to work on a Unix machine
The Mac OS is really a customized version of Unix
Like all versions of Unix, it has a command line
To see the command line, you need to run the Terminal application ...
which you will find in the Utilities folder ...
inside the Applications folder
This will open a window ...
where you can talk to your Macintosh through the command line
The two programs that come with the Mac are
- ssh (secure shell)
- scp (secure copy)
To make copying files to the UMB Unix machines easier ...
you can use FileZilla instead of scp
You can download FileZilla from https://filezilla-project.org

Open the Macintosh Terminal application
At the command line enter
```
ssh USERNAME@users3.cs.umb.edu
```
where USERNAME is a placeholder ...
for your Unix username
You will be prompted for your password
After you enter it, you get a Unix command line
To log into users3 I would type
```
ssh ghoffman@users3.cs.umb.edu
```

Then at the command line enter

scp  FILENAME  USERNAME@users3.cs.umb.edu:

where FILENAME is the name of the file you want to copy ...
and USERNAME is your Unix username
You will be prompted for your password
Be sure to include the the colon, :, after users3.cs.umb.edu
If you don't nothing will happen
This will transfer the file to your home directory
From there you can use the Unix mv (move) command ...
to move the file to the proper directory
If you wanted to move the file hello.py to the directory ...
whose relative pathname is it116/code_entries/ex_01 ...
you would type
```
mv hello.py it116/code_entries/ex_01
```
You can save yourself a step ...
by copying the file directly to the correct directory
You do this by following the colon with the path to the directory
```
scp FILENAME USERNAME@users3.cs.umb.edu:PATH_TO_DIRECTORY
```
If I wanted to copy the file hello.py to my it116/hw/hw1 directory ...

I would enter the following at the command line

scp hello.py ghoffman@users3.cs.umb.edu:it116/hw/hw1