Hello i'm new to ubuntu.
I was looking at the learning resources and i saw a book entitled "learn unix in 24 hours"
my question is what is unix?
is it the command line?
Are there any differences between the terminal in linux vs the terminal in mac (i just switched from mac)
Also i'm trying to install software. But i'm having a tough time doing so without the software centre.
I'm trying to install a java IDE called Dr Java.
I have a dr java.jar file in the download folder but i don't get how to install it.
Any help would be much appreciated. Thanks!