Is it possible to remove the device name in my shell commands to "save space"?
Yes, BASH (the default OS X Shell) has the ability to customize the prompt in many ways.
$PS1 is the the shell variable for the main prompt.
echo $PS1 in the command line and it will show you how $PS1 is currently configured.
If you just want to remove the the host name you can set $PS1 to
\W \u\$ (note there is a space after the
$PS1="\W \u\$ ")
If you want this to happen every time you login in you will need to add
export $PS1="\W \u\$ " to your
There is extensive information on setting the PS1 prompt with other options in the
man bash page.