What is unix? Installing programs?

[seal308]

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!

[CharlesA]

Linux is based off UNIX but it is not the same.

The terminal is similar to that on OSX, but it is still not the same.

As for Dr. Java, see here: http://ubuntuforums.org/showthread.php?t=1256676

[seal308]

so i'm still not getting it upon looking at that thread.
apparently this is the code the person used:
java -jar drjava-stable-20040326.jarhowever
my file is a drjava beta
name of the file is: drjava-beta-20110822-r5448.jar
this is where it's located: '/home/user/Downloads/drjava-beta-20110822-r5448.jar'
so i tried
java -jar drjava-beta-20110822-r5448.jar
but i got :
Unable to access jarfile drjava-beta-20110822-r5448.jar
can ideas?

[terrykiwi83]

how about trying



sudo java -jar drjava-beta-20110822-r5448.jar

[KiwiNZ]

Unix is a one wheeled exercycle

[alexfish]

Unix is a one wheeled exercycle
Get the updated Kernel

Unix E Ergometer Cross Trainer

[seal308]

sudo java -jar drjava-beta-20110822-r5448.jar

didn't work
this is what i got:
Unable to access jarfile drjava-beta-20110822-r5448.jar

any more ideas?

[CharlesA]

Try using the full path to drjava-beta-20110822-r5448.jar

[Mait]

so i'm still not getting it upon looking at that thread.
apparently this is the code the person used:
java -jar drjava-stable-20040326.jarhowever
my file is a drjava beta
name of the file is: drjava-beta-20110822-r5448.jar
this is where it's located: '/home/user/Downloads/drjava-beta-20110822-r5448.jar'
so i tried
java -jar drjava-beta-20110822-r5448.jar
but i got :
Unable to access jarfile drjava-beta-20110822-r5448.jar
can ideas?

Looks like you entered wrong file path. Try this one.

java -jar ~/Downloads/drjava-beta-20110822-r5448.jar

'~' means your home directory.

[Jerry N]

For help with your question "What is UNIX", check the following link. http://en.wikipedia.org/wiki/Unix


Jerry

[idoitprone]

well to make things more confusing, regardless of 30 years of operating system research. all we get is unix again.

To add some extra confusion, Window NT kernel is a base off unix

So basically linux, mac, windows have characteristic of unix

http://herpolhode.com/rob/utah2000.pdf

yeah the mind blowing window unix thing

i wish that was a april fools joke