Mac - unix terminal
MAC OS X Terminal Window
The terminal window on Mac is under: Applications > Utilities > Terminal NOTE: There is also an X11 window here which is similar Drag this onto the dock (so it's easier to access) and click it to start a new shell (Shortcut = [Apple]+[N])
Use File > Show Info to change the appearance (color, transparency, etc) and click "Use Settings as Default".
The default shell is usually tsch. To see what shell is default:
... you can change a shell to "bash" or "csh" by simply typing it.
Changing Environmental Variables in Terminal
I had some trouble with this a while ago. PATH is a special environmental variable which lists commands that can be called (without typing the full path).. to see the current value type:
> echo $PATH /bin:/sbin:/usr/bin
As you can see PATH contains a list of folders (where commands reside) seperated by colons. To ADD a new folder to PATH you can type:
> set PATH=/usr/local/Trolltech/Qt-4.2.2/bin:$PATH
> setenv PATH /usr/local/Trolltech/Qt-4.2.2/bin:$PATH
However, I've found this does not take immediate effect for the current shell, and is erased when you close and start a new shell. To make the change permanent you can modify .profile (if your shell is bash) OR .login / .cshrc (if your shell is csh or tcsh). To do this type:
> pico ~/.login
DON'T be surprised if this file doesn't exist yet (and there is nothing in it)! Using pico (or your editor of choice) add the line:
setenv PATH /usr/local/Trolltech/Qt-4.2.2/bin:$PATH
Now create/save the file and exit (in pico: click [Ctrl+O] to save and [Ctrl+X] to exit). To view it use:
> cat ~/.login
Now close Terminal, open it again, check that echo $PATH includes the new folders, and you should be able to use/access commands in that folder.
To log into someone's computer on the network:
(using the computer's name)
To kill process:
use top to get process ID then run kill -9 1734 (-9 is more powerful).