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Comparison of operating systems
By Wikipedia,
the free encyclopedia,
http://en.wikipedia.org/wiki/Comparison_of_operating_systems
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Desktop OS market
share
as of October, 2008[1] |
Windows - 90.29% |
Mac OS X - 8.23% |
Linux - 0.91% |
iPhone - 0.32% |
Playstation - 0.03% |
SunOS - 0.01% |
These tables compare general and technical information
for a number of widely used and currently available operating
systems.
Due to the large number and variety of available Linux distributions, they are all grouped under a single entry; see comparison of Linux distributions for a detailed comparison. There are also a variety of BSD operating systems, covered in comparison of BSD operating systems. For information on views of each operating system, see operating system advocacy.
General information
Name |
Creator |
First public release |
Prede- cessor |
Latest stable version |
Latest release date |
Cost/ Availabi- lity |
Preferred license1 |
Target system type |
AIX |
IBM |
1986-?-? |
System
V R3 |
6.1 |
2007- 11-? |
Bundled with hardware |
Proprie-
tary |
Server,
NetApp,
Worksta-tion |
Amiga
OS |
Amiga,
Inc. |
1985-07-23 |
TRIPOS
(as the disk opera-ting compo- nent of AmigaOS) |
4.1 |
2008- 09-16 |
Bundled with hardware |
Proprie-
tary, Clones available under GNU
GPL |
Worksta-tion,
Home Desktop |
Free
BSD |
The FreeBSD
Project |
1993-12-? |
386BSD |
7.0 |
2008- 02-27 |
Free |
BSD |
Server,
Worksta-tion,
NetApp,
Embedded |
Haiku |
Haiku
Inc. |
- |
BeOS
R5 |
|
(Nightly builds) |
Free |
MIT
License |
Home Desktop |
HP-UX |
Hewlett-Packard |
1983-?-? |
Unix |
11.31 "11i v3" |
2007- 02-15 |
$400 |
Proprie-
tary |
Server,
Worksta-tion |
IBM
i |
IBM |
1988-?-? |
OS/400 |
V6R1 |
2008- 04-? |
Bundled with hardware |
Proprie-
tary |
Server |
IRIX |
SGI |
1988-?-? |
Unix |
6.5.30 |
2006- 08-16 |
Bundled with hardware |
Proprie-
tary |
Server,
Worksta-tion |
Infer
no |
Bell
Labs |
1997-?-? |
Plan
9 |
Fourth Edition |
2007- 02-? |
Free |
MIT/GNU
GPL/GNU
LGPL/LPL |
NetApp,
Server,
Embedded |
Linux |
Linus
Torvalds, et al. |
1992-?-? |
Unix4,
Minix
5 |
Linux
kernel 2.6.26.1; GNU
C Library 2.7 |
2008- 08-01; 2007- 10-23 |
See Compa-rison
of Linux distribu-tions |
GNU
GPL, GNU
LGPL and other licenses |
See: Compari-son
of Linux distributions |
Mac
OS |
Apple
Inc. |
1984-01-24 |
None2
7 |
9.2.2 |
2002- 05-12 |
Bundled with 68K
and PowerPC Macs;
versions 7-9 sold as retail upgrades3 |
Proprie-
tary |
Worksta-tion,
Home Desktop |
Mac
OS X |
Apple
Inc. |
2001-03-24 |
NeXT
STEP / OPEN
STEP / Rhapsody,
Mac
OS |
10.5.5 "Leopard" |
2008- 09-15 |
Bundled with hardware; also sold separa- tely:
Desktop $129 (Single User)
Family Pack $199 (5 license) |
Open source core system (Both Intel and PowerPC versions)
(APSL,
GNU
GPL, others) with proprie-
tary higher level API layers |
Worksta-
tion, Home Desktop, Mobile (embedded) |
Mac
OS X Server |
Apple
Inc. |
2001-03-24 |
NeXT
STEP / OPEN
STEP / Rhapsody,
Mac
OS |
10.5.5 "Leopard Server" |
2008- 09-15 |
Bundled with hardware; also sold separately:
$499 (10 clients)
$999 (unlimited clients) |
Open source core system (Both Intel and PowerPC versions)
(APSL,
GNU
GPL, others) with proprie-
tary higher level API layers |
Server |
Minix3 |
Andrew
S. Tanen- baum |
2005-10-? |
Minix2 |
3.1.2a |
2006- 05-29 |
Free |
BSD |
Worksta-tion |
NetBSD |
The NetBSD
Project |
1993-05-? |
386BSD |
4.0 |
2007- 12-19 |
Free |
BSD |
NetApp,
Server,
Worksta-tion,
Embedded |
Net
Ware |
Novell |
1985 |
S-Net |
6.5 SP7 |
2007- 10-? |
$184 (single-user) |
Proprie-
tary |
Server |
Open
BSD |
The OpenBSD
Project |
1995-10-? |
NetBSD
1.0 |
4.3 |
2008- 05-01 |
Free |
BSD |
Server,
NetApp,
Worksta-tion,
Embedded |
Open
VMS |
DEC
(now HP) |
1978-02-? |
RSX-11M |
8.3 |
2006- 08-? |
Free for non-commer- cial use |
Proprie-
tary |
Server,
Worksta-tion |
OS/2 |
IBM
and Microsoft |
1987-12-? |
MS-DOS,
Windows
3.x |
4.52 |
2001- 12-? |
$300 |
Proprie-
tary |
Home Desktop, Server |
PC-BSD |
PC-BSD Software |
2006-?-? |
FreeBSD6 |
1.51 |
2008- 04-23 |
Free |
BSD |
Desktop,
Worksta-tion,
Server |
Plan
9 |
Bell
Labs |
1993-?-? |
Unix |
Fourth Edition |
(Daily snap-shots) |
Free |
LPL |
Worksta-tion,
Server,
Embedded,
HPC |
QNX |
QNX
Software Systems |
1982-?-? |
Unix |
6.3.2 |
2006- 09-28 |
? |
Proprie-
tary |
Worksta-tion,
Server,
Embedded |
Solaris |
Sun |
1992-07-? |
SunOS |
10 5/08 |
2008- 04-15 |
Free |
CDDL |
Server,
Worksta-tion |
Win-
dows Server (NT family) |
Microsoft |
1993-07-27 |
MS-DOS,
OS/2,
Windows
3.x |
Windows
Server 2008 (NT 6.0) |
2008- 02-27 |
$469 Web Server; other editions dependent on number
of CALs
purchased |
Proprie-
tary |
Server,
NetApp,
Embedded,
HPC |
Micro-
soft Win- dows (NT family) |
Microsoft |
1985-11-20 |
MS-DOS,
OS/2,
Windows
3.x |
Windows
Vista (NT 6.0) |
2006 Novem-ber - 2007 January 8 |
Home Basic (Retail) $99.95, Home Premium (Retail)
$129.95, Business (Retail) $199.95, Ultimate (Retail)
$219.95[2] |
Proprie-
tary |
Worksta-tion,
Home Desktop, media
center, Tablet
PC, embedded |
RISC
OS |
Acorn
Compu- ters, RISC
OS Limited, Castle
Techno- logy Ltd |
1989-04-? |
ARTHUR,
also the BBC
Master OS |
RISC
OS 6.10 Select4i4 and RISC OS 5.13" |
2008- 05-28 |
$127 (?70) |
Proprie-tary;
originally bundled with computer |
educatio-nal desktop, home computer |
ZETA |
yellowTAB |
2005-06-? |
BeOS
R5 |
1.2 |
2006- 04-27 |
Profes- sional $110, Student $80 |
Proprie-
tary |
Home Desktop, Media Worksta-tion |
STOP
6 / XTS-400 |
BAE
Systems |
2003-?-? |
STOP 5 / XTS-300 |
6.4.U1 |
2007- 06-? |
Unknown; supplied to customers on- demand by BAE Systems |
Proprie-
tary |
Server,
Worksta-tion,
cross- domain solution, network guard |
React
OS |
ReactOS develop-ment team |
1996-?-? |
Windows
NT |
0.3.4 |
2008- 01-22 |
Free |
GNU
GPL, GNU
LGPL |
Worksta-tion,
Home Desktop |
z/OS |
IBM |
2000 |
OS/390 |
1.9 |
2007 |
Monthly License Charge (about $130 and up) |
Proprie-
tary |
IBM
mainframe |
Name |
Creator |
First public release |
Predeces-sor |
Latest stable version |
Latest release date |
Cost/ Availability |
Preferred license1 |
Target system type |
Note 1: Most OS distributions include bundled software with various other licenses.
Note 2: Although Lisa OS ran on the same (albeit a slower version) microprocessor and was developed by Apple Computer at the same time as Mac OS, they were developed as different projects, sharing only a similar GUI between them. [1]
Note 3: Mac OS versions up to 7.5.5 are available free of charge here.
Note 4: GNU is a recursive acronym for GNU's Not Unix, which was chosen because its design is Unix-like, but differs from Unix by being Free software and by not containing any Unix code.
Note 5: Minix inspired the Linux kernel. No code from Minix was used to create the Linux kernel.
Note 6: PC-BSD uses FreeBSD as a base system with custom configuration and several desktop oriented tools to create an easy to use FreeBSD system for Desktops and Workstations.
Note 7: Mac OS 7.6 was the first Mac OS operating system to be labeled Mac OS. Operating systems prior to this were named System Software 0.1 (available only to developers) through System Software 7.5, and known as System #.# for short.
Note 8: Windows Vista was released to manufacturing on November 8, 2006, and was subsequently made available to software developers and businesses in November 2006, with retail availability following on January 30, 2007
Technical information
Name |
Compu-ter
architec-tures suppor-ted |
File
sys-tems suppor- ted |
Kernel
type |
Sour-
ce lines of code |
GUI
defa-ult is on6 |
Package
manage- ment |
Update manage- ment |
Native APIs
7 |
Non- native APIs suppor- ted through subsys- tems |
AIX |
Power
PC |
JFS,
JFS2,
ISO
9660, UDF,
NFS,
SMBFS,
GPFS |
Mono-lithic |
|
No |
installp, RPM |
Service Update Manage-ment Assis-tant (SUMA) |
SysV,
POSIX |
|
Amiga
OS |
68k, PPC
(x86
Clone availa-ble, see: AROS) |
Proprie- tary (OFS,
FFS,SFS,
PFS),
FAT,
ISO
9660, UDF,
many others via 3rd party drivers, such as SMBFS,
etc. |
Micro-kernel |
|
Yes |
Installer
19
(almost not necessa- ry) 20 |
Ami
Update (almost not necessa-ry) 21 |
Proprie- tary |
UNIX (BSD)
(avail- able through 3rd party ixemul.
library) |
Free
BSD |
x86,
x86-64,
PC98,
SPARC,
others |
UFS2,
ext2,
ext3,
FAT,
ISO
9660, UDF,
NFS,
ReiserFS
(read only), XFS
(experi- menttal), ZFS
(experi-mental) and others |
Mono-lithic
with modu-les |
|
No |
ports
tree, packa- ges |
by source (CVSup,
port-snap), network binary update (freebsd-update) |
POSIX,
BSD |
Win16, Win32, Linux |
Haiku |
x86, 68k |
BFS
(default), FAT,
ISO
9660 |
Micro-kernel |
|
Yes |
- |
None |
POSIX,
BeOS
API |
|
HP-UX |
PA-RISC,
IA-64 |
VxFS,
HFS,
ISO
9660, UDF,
NFS,
SMBFS |
Mono-lithic
with modu-les |
|
No |
swin- stall |
swa (HP-UX Soft-ware Assis-tant) |
SysV,
POSIX |
|
Linux |
x86,
x86-64,
PPC,
SPARC,
Alpha,
others |
ext2,
ext3,
ext4,
ReiserFS,
FAT,
ISO
9660, UDF,
NFS,
and others |
Mono-lithic
with modu-les |
~ 9 milli- on [2] |
See: Comparison
of Linux distributions |
POSIX,
LSB,
QT or GTK |
Mono, Java, Win16, Win32 |
Inferno |
x86,
PPC,
SPARC,
Alpha,
MIPS,
others |
Styx/
9P2000, kfs,
FAT,
ISO
9660 |
Mono-lithic
with modu-les, user
space file sys-tems |
|
Yes |
? |
? |
Proprie-tary |
|
Mac
OS Classic |
68k, PPC |
HFS+, HFS, AFP, ISO 9660, FAT, UDF |
Mono-lithic
with modu- les |
|
Yes |
None |
Soft-ware
Update |
Toolbox,
Carbon
(from version 8.1) |
|
Mac
OS X |
PPC, x86, x86-64, ARM |
HFS+
(default), HFS,
UFS,
AFP,
ISO
9660, FAT,
UDF,
NFS,
SMBFS,
NTFS,
FTP,
WebDAV,
ZFS
(experi-mental) |
Hybrid |
~86 milli- on [3] |
Yes |
Mac
OS X Installer |
Soft-ware
Update |
Carbon,
Cocoa,
Java,
BSD/
POSIX, X11
(since 10.3) |
Toolbox
(only in versions up to Mac OS X 10.4, not suppor- ted
on x86 architec-ture), Win16, Win32 |
Minix3 |
x86 |
|
Micro-kernel |
4000 |
No |
|
|
POSIX |
|
Net
BSD |
x86,
x86-64,
PPC,
SPARC,
68k,
Alpha,
others |
UFS,
UFS2,
ext2,
FAT,
ISO
9660, NFS,
LFS,
and others |
Mono-lithic
with modu-les |
|
No8 |
pkgsrc |
by source (CVS,
CVSup,
rsync)
or binary (using sysinst) |
BSD, POSIX |
|
Net
Ware |
x86 |
NSS,
NWFS,
FAT,
NFS,
AFP,
UDF,
CIFS,
ISO
9660 |
Hybrid |
|
Yes |
NWCON FIG. NLM, RPM,
X11-
based GUI installer |
binary updates, ZEN Works for Servers, Red
Carpet |
Proprie-tary |
|
OES-Linux |
x86 PPC |
NSS,
NFS,
AFP,
UDF,
CIFS,
ISO
9660, Netware Traditio- nal File System |
Mono-lithic
with modu-les |
|
No |
RPM,
X11-
based GUI installer |
binary updates, ZEN Works for Server, Red
Carpet |
Proprie-tary (?) |
|
Open
BSD |
x86,
x86-64,
SPARC,
68k,
Alpha,
VAX,
others |
ffs, ext2, FAT, ISO 9660, NFS, some others |
Mono-lithic
with modu-les |
|
No8 |
ports
tree, packa- ges |
by source |
BSD, POSIX |
|
Open
VMS |
VAX, Alpha,
IA-64 |
Files-11 (ODS), ISO 9660, NFS, CIFS |
Mono-lithic
with modu-les |
|
No |
PCSI, VMSIN- STAL |
? |
Proprie-tary | POSIX |
OS/2 |
x86 |
HPFS, JFS, FAT, ISO 9660, UDF, NFS |
Mono-lithic |
|
No |
Feature Install and others |
? |
Proprie-tary, DOS
API, Win16 |
Win32 |
PC-BSD |
x86 10 |
UFS2,
ext2,
ext3,
FAT,
ISO
9660, UDF,
NFS,
ReiserFS
(read only), XFS
(experi-mental) and others |
Mono-lithic
with modu-les |
|
Yes |
ports
tree, packa-ges, PBI Graphical Installers |
by PBI updates, source (CVSup,
port-snap), network binary update (freebsd-update) |
BSD, POSIX,
QT |
Win16, Win32 |
Plan
9 |
x86,
Alpha,
MIPS,
PPC,
SPARC,
others |
fossil/
venti,
9P2000,
kfs,
ext2,
FAT,
ISO
9660 |
Mono-lithic,
user
space file sys-tems |
|
Yes |
None |
replica |
Proprie-tary (Unix-like) | POSIX
compati- bility layer |
React
OS |
x86, PowerPC |
FAT |
Hybrid |
1-2 mil |
Yes |
None |
None |
Win16, Win32, NT API |
|
RISC
OS |
ARM (both 26 and 32-bit) |
Acorn
ADFS, Econet
ANFS,
FAT,
ISO
9660, many others as loadable filesys- tems |
Unpro-tected mono-tas-king micro- kernel with large
num-ber of reloca- table modu-les |
|
Yes |
Applica-tions self-contai-ned; hardware drivers often
in ROM |
!Iyo Up Wtch |
Huge number of SWI
calls; exten- sive C libraries |
|
Solaris |
x86,
x86-64,
SPARC |
UFS,
ZFS,
ext2,
FAT,
ISO
9660, UDF,
NFS,
QFS,
some others |
Mono-lithic
with modu-les |
|
Yes |
SysV
pack- ages (pkgadd) |
Sun Connec- tion |
SysV,
POSIX,
GTK |
Win16, Win32 |
STOP
6 / XTS -400 |
x86 |
Proprie- tary |
Mono-lithic |
|
No |
RPM
for some untrus- ted applica-tions |
Binary updates via postal mail and proprie- tary tools |
some SysV,
some POSIX,
some Linux, some proprie-tary |
|
Win-dows
Server (NT family) |
x86, x86-64, IA-64 |
NTFS,
FAT,
ISO
9660, UDF;
3rd-party drivers support ext2,
ext3,
reiserfs
9,
and HFS |
Hybrid |
~45 milli-on [4] |
Yes |
MSI, custom installers |
Windows
Update |
Win32, NT API |
DOS
API, Win16
(only in 32-bit versions), POSIX,
.NET |
Win-dows
(NT family) |
x86, x86-64 |
NTFS,
FAT
ISO
9660, UDF;
3rd-party drivers support ext2,
ext3,
reiserfs
9, and HFS |
Hybrid |
~ 40 (XP)/ 64 (Vista) milli-on |
Yes |
MSI, custom installers |
Windows
Update |
Win32, NT
API |
DOS
API, Win16
(only in 32-bit versions), POSIX,
.NET |
ZETA |
x86 |
BFS
(default), FAT,
ISO
9660, UDF,
HFS,
AFP,
ext2,
CIFS,
NTFS
(read only), ReiserFS
(read only, up to v3.6) |
Hybrid |
|
Yes |
Software
Valet, script-based installers |
None |
POSIX,
BeOS
API |
|
z/OS |
z/Archi-
tec- ture |
VSAM catalogs, HFS, zFS, etc. |
Mono-lithic |
|
No |
SMP/E |
SMP/E |
Access
methods, etc. |
POSIX |
Name |
Compu-ter
architec-tures suppor- ted |
File
sys-tems suppor- ted |
Kernel
type |
Sour-ce
lines of code |
GUI
defa-ult is on6 |
Package
manage -ment |
Update manage-ment |
Native APIs
7 |
Non- native APIs suppor- ted through subsys-tems |
Note 6: Operating systems where the GUI is not installed and turned on by default are often bundled with an implementation of the X Window System, installation of which is usually optional.
Note 7: Most operating systems use proprietary APIs in addition to any supported standards.
Note 8: NetBSD and OpenBSD include the X Window System as base install sets, managed in their respective main source repository, including local modifications. Packages are also provided for more up-to-date versions which may be less tested.
Note 9: Windows can read and write with Ext2 and Ext3 file systems only when a driver from FS-driver or ext2fsd is installed. However, using Explore2fs, Windows can read from, but not write to, Ext2 and Ext3 file systems. Windows can also access ReiserFS through rfstool and related programs.
Note 10: only i686 CPU
Note 19: Amiga OS features since OS 2.0 version a standard centralized Install utility called Installer, which could be used by any software house to install programs. It works as a LISP language interpreter, and install procedures could be listed as simple text. AmigaOS can also benefit of a 3rd party copyrighted library called XAD that is available for all POSIX (Unix, Linux, BSD, and for AmigaOS, MorphOS, etc.). This library is freely distributable and publicly available on Aminet Amiga centralized repository of all Open Source or Free programs and utilities. XAD.Library, complete with GUI Voodoo-X, is based on modules and capable to manage over 300 compression methods and package systems (Voodoo-X GUI supports 80 package systems), including those widely accepted as standards such as .ZIP, .CAB, .LHA, .LZX, .RPM, etc.
Note 20: A standard AmigaOS installation requires usually only few files (typically 3 to 10 files) to be copied in their appropriate directory, and libraries and language files for national localization to be put in their standard OS directories. Any Amiga user with some minimal experience knows where these files should be copied and could perform programs installations by hand.
Note 21: AmiUpdate is capable to update AmigaOS files and also all Amiga programs which are registered to use the same update program that is standard for Amiga. Updating AmigaOS requires only few libraries to be put in standard OS location (for example all libraries are stored in "Libs:" standard virtual device and absolute path finder for "Libs" directory, Fonts are all in "Fonts:" absolute locator, the files for language localization are all stored in "Locale:", and so on). This leaves Amiga users with a minimal knowledge of the system almost free to perform by hand the update of the system files.
Security
|
Resource access control |
Subsystem isolation mechanisms |
Integra- ted firewall |
Encry-pted file systems |
No
execute (NX) page flag |
Known unpatched vulnera- bilities9 |
Hard- ware |
Emula-tion |
Number |
Oldest |
AIX |
Unix,
ACLs |
chroot |
IP Filter, IPSec VPNs, basic IDS |
No |
Yes
24 |
n/a |
3 |
2002- 10-11 |
FreeBSD |
Unix,
ACLs,
MAC |
chroot,
jail,
MAC
Partitions |
IPFW2,
IPFilter,
PF |
Yes |
Yes |
No
25 |
3 |
2006- 10-11 |
HP-UX |
Unix,
ACLs |
chroot |
IPFilter |
No |
? |
4 |
2002- 12-12 |
Inferno |
Unix |
Name-
spaces |
? |
? |
No |
No |
Unknown |
Linux |
Unix,
ACLs10,
MAC |
chroot,
Capability-based
security
11, seccomp,
SELinux |
Netfilter/
Varied by distribu-tion |
Yes |
Yes |
No10 |
13 |
2004- 05-10 |
Mac
OS Classic |
No |
No |
No |
No |
No |
No |
0 |
- |
Mac
OS X |
Unix,
ACLs13 |
chroot |
ipfw |
Yes |
No |
Yes
(Intel Only) |
5 |
2006- 11-22 |
NetBSD |
Unix,
Veriexec,
PaX, kauth |
chroot,
systrace,
kauth |
IPFilter,
PF |
Yes |
Yes |
No |
Unknown |
NetWare |
Directory-enabled ACLs |
Protected Address Spaces |
IPFLT.
NLM |
Yes |
Yes |
No |
Unknown |
OES-Linux |
Directory-enabled ACLs |
chroot |
IPFilter |
Yes |
Yes |
No |
Unknown |
OpenBSD |
Unix |
chroot,
systrace |
PF |
Yes |
Yes |
Yes |
1 |
2007- 08-16 |
OpenVMS |
ACLs,
Privileges |
logical
name tables |
? |
? |
? |
0 |
- |
OS/2
/ eCom
Station |
ACLs14 |
No |
No |
No |
? |
Unknown |
PC-BSD |
Unix,
ACLs,
MAC |
chroot,
jail,
MAC
Partitions |
IPFW2,
IPFilter,
PF |
Yes18 |
? |
1 |
2006- 09-26 |
Plan
9 |
Unix
(?) |
Namespaces |
ipmux |
Yes |
No |
No |
Unknown |
Solaris |
Unix,
RBAC,
ACLs,
Least
privilege, Trusted
Extensions |
chroot,
Containers
15 |
IPFilter |
Yes22 |
Yes |
No |
13 |
2005- 04-13 |
Win-
dows Server 2003 |
ACLs,
Privileges,
RBAC |
Win32 Window Station, Desktop, Job objects |
Windows
Firewall, IPSec
TCP/IP Filtering |
Yes |
Yes |
Yes |
10 |
2003- 04-22 |
Win-
dows XP |
ACLs |
Win32 Window Station, Desktop, Job objects |
Windows
Firewall, TCP/IP Filtering, IPSec |
Yes
(With NTFS) |
Yes
26 |
Yes
27 |
2;
29 |
2007- 02-23; 2002- 09-02 |
ZETA |
Unix
16 |
No |
No |
No |
No |
No |
Unknown |
STOP
6 / XTS-40017 |
Unix,
Multilevel
security, Biba
mandatory integrity, ACLs,
Privileges,
subtype mechanism |
Multilevel
security, Biba
Integrity Model, subtype mechanism |
No |
No |
No |
No |
0 |
- |
z/OS |
RACF |
RACF, key-protected address spaces |
z/OS IP Security |
Optio-nal |
Yes (key-protec-ted address spaces) |
Yes |
0 |
- |
Note 9: Comparison of known unpatched vulnerabilities is based on Secunia vulnerabilities reports with a severity of less critical and above. Updated automatically.
Note 10: POSIX ACL support is included in Linux 2.6, but requires a file system capable of storing them (such as ext3, XFS or ReiserFS).
Note 11: A jail mechanism is available separately in the Linux-VServer project, but is not integrated into any mainline Linux kernel.
Note 12: The Exec Shield and PaX extensions provide NX emulation on x86 hardware. They are not yet integrated inside the mainline kernel but are available as patches or separate kernels
Note 13: ACLs were added to Mac OS X beginning with version 10.4.
Note 14: ACLs are available only in OS/2 Server versions with HPFS386 filesystem.
Note 15: "Solaris Containers" (including "Zones") are a jail-type mechanism introduced with Solaris 10.
Note 16: Zeta has full Unix file permissions, but the OS is single user, and users always run as superuser.
Note 17: STOP 6 is certified under Common Criteria at EAL5+.
Note 18: Additionally swap space may be encrypted during installation, uses memory based tmp file storage by default.
Note 22: Through ZFS
Note 23: Novell NetWare uses MSDOS to load itself in to memory and once it is running, MSDOS is not used and can be unloaded (it is a common misconception that NetWare "runs on top of MSDOS").
Note 24: AIX use the PowerPC architecture which offer page-level protection mechanism. Since AIX version 5300-03 (5.3), this feature can be activated using the sedmgr command.
Note 25: FreeBSD can be built with ProPolice/SSP.
Note 26: Available on XP sp2, 2003 sp1 and newer.
Note 27: By default, software-enforced DEP helps protect only limited system binaries.
References
- ^ Operating System Market Share, May 2008, courtesy of Net Applications, a marketing company which obtains its data from the Alexa Toolbar or related products. Because people who install these products on their computers are not always aware that the product reports web browsing habits back to the marketers at Alexa some security software considers the Alexa Toolbar spyware and removes it. Both the automated removal-as-spyware and the self-selecting nature of those who install software that reports on personal web browsing habits raises questions as to whether the resulting data represents a unbiased statistical sample of Internet users.
- ^ http://www.microsoft.com/windows/windows-vista/compare-editions/default.aspx
- ^ Jobs, Steve (August 2006). "Live from WWDC 2006: Steve Jobs Keynote". Retrieved on 2007-02-16. "86 million lines of source code that was ported to run on an entirely new architecture with zero hiccups."
- ^ Ben Liblit, Andrew Begel, and Eve Sweetser. "Cognitive Perspectives on the Role of Naming in Computer Programs". Retrieved on 2007-12-26.
See also
Published - October 2008
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