Lektion 1 Flashcards
In X Windowing system, the application is a
client
In X Windowing system, the GUI machine is a
server
GNU means
GNU is Not Unix
GNU’s father was
Richard Stallman
GNU’s vision
Open and free OS
Unix was originally in internal project at
AT&T
Unix was originally written in
assembly
Unix was later ported to
C
Unix in C portability
10% had to be rewritten in assembly
Main variants of Unix
BSD-Unix and System V
AT&T’s Unix variant
System V
System V was developed by
AT&T
BSD was developed by
Berkley University
Sun Microsystems’ Unix variant
SunOS and Solaris
SunOS developed by
Sun
Solaris developed by
Sun
HPUX developed by
HP
AIX developed by
IBM
GPL
General Public License
copyleft
opposite of copyright
FSF
Free Software Foundation
Linus Torvald presented a Unix compatible kernel in
1991
What we call Linux, is really named
GNU/Linux
Linux is not really an OS, but
a kernel
XNU
kernel of iOS
Kernel of iOS is
XNU
XNU is based on
Mach, BSD
a “terminal” is a
command window
A terminal runs
a separate shell program
Default Linux shell program
bash
bash
gnu Bourne Again SHell
Executed at login
~/.bash_profile