uname

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uname
Developer(s)AT&T Bell Laboratories, David MacKenzie.
Operating systemUnix and Unix-like
PlatformCross-platform
TypeCommand
Licensecoreutils: GPL-3.0-or-later

uname (short for unix name) is a computer program in Unix and Unix-like computer operating systems that prints the name, version and other details about the current machine and the operating system running on it.

History[edit]

The uname system call and command appeared for the first time in PWB/UNIX. Both are specified by POSIX.[1][2] The GNU version of uname is included in the "sh-utils" or "coreutils" packages. uname itself is not available as a standalone program. The version of uname bundled in GNU coreutils was written by David MacKenzie.[3] The command is available as a separate package for Microsoft Windows as part of the GnuWin32 project[4] and the UnxUtils collection of native Win32 ports of common GNU Unix-like utilities.[5]

Related and similar commands[edit]

  • Some Unix variants, such as AT&T UNIX System V Release 3.0, include the related setname program, used to change the values that uname reports.
  • The bash shell provides the special variables OSTYPE and HOSTTYPE whose values are similar to those of uname -o and uname -m respectively.

Examples[edit]

On a system running Darwin, the output from running uname with the -a command-line argument might look like the text below: 

$ uname -a
Darwin Roadrunner.local 10.3.0 Darwin Kernel Version 10.3.0: Fri Feb 26 11:58:09 PST 2010; root:xnu-1504.3.12~1/RELEASE_I386 i386

The following table contains examples from various versions of uname on various platforms.[6]

Distribution System (or kernel) (-s)
POSIX 		Operating System (or distribution) (-o) Machine (-m)
POSIX 		Processor (-p) Hardware platform (-i or -M) OS (kernel) version (-v)
POSIX 		OS (kernel) release (-r)
POSIX
Android 4.2.1 on Nexus 4 Linux GNU/Linux armv7l Un­known Un­known #1 SMP PREEMPT Thu Nov 8 15:42:02 PST 2012 3.4.0-perf-ge039dcb
Android 2.3 on Meteorit netbook Linux GNU/Linux armv6l Un­known Un­known
any, coreutils 7.1 Linux GNU/Linux sparc64 sparc64 UltraSPARC T1 (Niagara) (all) (all)
any, coreutils 7.1–8.4 Linux GNU/Linux ppc64 ppc64 PPC 970FX (XServe G5) (all) (all)
Arch Linux Linux GNU/Linux x86_64 Un­known Un­known #1 SMP PREEMPT_DYNAMIC Tue, 04 Oct 2022 19:16:52 +0000 6.0.0-arch1-1
A/UX 3.1 A/UX illegal option mc68030 illegal option illegal option SVR2 3.1
busybox-w32 1.27 (32-bit) on Windows 10 Windows_NT MS/Windows i686 Un­known Un­known 9200 6.2
busybox-w32 1.27 (64-bit) on Wine 2.0 Windows_NT MS/Windows x86_64 Un­known Un­known 3790 5.2
CentOS 6.5, Pentium SU4100 Linux GNU/Linux i686 i686 i386 #1 SMP Fri Nov 22 00:26:36 UTC 2013 2.6.32-431.el6.i686
Cray UNICOS 9.0.2.2 sn5176 illegal option CRAY Y-MP illegal option illegal option sin.0 9.0.2.2
Cygwin (Windows XP), Pentium 4 CYGWIN_NT-5.1 Cygwin i686 Un­known Un­known 2006-01-20 13:28 1.5.19(0.150/4/2)
Cygwin 1.7 (Windows 7 32-bit), Core i7 CYGWIN_NT-6.1 Cygwin i686 Un­known Un­known 2012-07-20 22:55 1.7.16(0.262/5/3)
Cygwin 1.7 (Windows 7 64-bit), Core i7 CYGWIN_NT-6.1-WOW64 Cygwin i686 Un­known Un­known 2012-05-09 10:25 1.7.15(0.260/5/3)
Cygwin 1.7 64 bit (Windows 7 64-bit) CYGWIN_NT-6.1 Cygwin x86_64 Un­known Un­known 2014-02-09 21:06 1.7.28(0.271/5/3)
Cygwin 2.2 64 bit (Windows 10 64-bit) CYGWIN_NT-10.0 Cygwin x86_64 Un­known Un­known 2015-08-20 11:42 2.2.1(0.289/5/3)
DJGPP v2 32 bit (Windows Server 2008) MS-DOS illegal option i686 illegal option illegal option 50 5
Debian 6.0.5 on Raspberry Pi B Linux GNU/Linux armv6l Un­known unknown (-i)
invalid (-M) 		#90 Wed Apr 18 18:23:05 BST 2012 / #538 PREEMPT Fri Aug 30 20:42:08 BST 2013 3.1.9+ / 3.6.11+
Debian on WD MyBookLive Linux GNU/Linux ppc Un­known unknown (-i)
invalid (-M) 		#1 Fri Oct 15 17:13:23 PDT 2010 2.6.32.11-svn21605
Debian GNU/Hurd GNU GNU i686-AT386 Un­known unknown (-i)
illegal option (-M) 		GNU-Mach 1.3.99-486/Hurd-0.3 0.3
Debian GNU/kFreeBSD 6.0, AMD GNU/kFreeBSD GNU/kFreeBSD x86_64 amd64 AMD Sempron(tm) Processor 3000+ #0 Thu Nov 26 04:22:59 CET 2009 8.0-1-amd64
DragonFlyBSD DragonFly illegal option i386 i386 GENERIC DragonFly v2.13.0.749.g93fef-DEVELOPMENT #0: … 2.13-DEVELOPMENT
DragonFlyBSD 2.7, AMD64 DragonFly illegal option x86_64 x86_64 [filename of kernel conf file] DragonFly v2.7.3.122.g0ba92-DEVELOPMENT #0: Tue June 8 16:50:35 CEST 2010 2.7-DEVELOPMENT root@Chance.: /usr/obj/usr/src/sys/X86_64_GENERIC
Fedora 19 Linux GNU/Linux i686 i686 i386 #1 SMP Fri Mar 7 17:22:54 UTC 2014 3.13.6-100.fc19.i686
FreeBSD 6.1, Intel FreeBSD illegal option i386 i386 [kernel name from kernel conf file. i.e.: GENERIC] FreeBSD 6.1-RELEASE-p15 #1: Sun Apr 15 18:04:51 EDT 2007 6.1-RELEASE-p15
FreeBSD 9.0, Intel FreeBSD FreeBSD amd64 amd64 [kernel name from kernel conf file. i.e.: GENERIC] FreeBSD 9.0-RELEASE #0: Tue Jan 3 07:46:30 UTC 2012 root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC 9.0-RELEASE
Gentoo, UltraSparc IIe Linux GNU/Linux sparc64 sun4u TI UltraSparc IIe (Hummingbird) #1 SMP Wed Nov 10 02:04:26 CET 2010 2.6.34-gentoo-r12
Haiku R1/Alpha 1, QEMU Haiku Haiku BePC Un­known Un­known r33109 Sep 12 2009 17:45:45 1
HP-UX HP-UX illegal option 9000/712 illegal option [Unique machine ID number or node name if cannot be determined.] U B.11.11
HP-UX 11i v3 HP-UX illegal option ia64 illegal option [Unique machine ID number or node name if cannot be determined.] U B.11.31
GNU Hurd GNU GNU i686-AT386 unknown unknown GNU-Mach 1.8+git20190109-486/Hurd-0.9 0.9
IBM AIX PS/2 v1.3 AIX illegal option i386 illegal option illegal option 1 3.0
IBM AIX 5.3 AIX illegal option (serial number of machine) powerpc IBM,8205-E6B 5 3
IBM AIX 7.1 AIX illegal option (serial number of machine) powerpc IBM,7891-73X 7 1
IBM AIX 7.2 AIX illegal option (serial number of machine) powerpc IBM,9009-42A 7 2
IBM i 5.3 with QSH OS400 (hostname) (serial number of machine) Un­known Un­known 5 3
IBM i 6.1 with QSH OS400 (hostname) (serial number of machine) Un­known Un­known 6 1
IBM i 7.1 with QSH OS400 (hostname) (serial number of machine) Un­known Un­known 7 1
Interix (Windows Services for UNIX) 3.5 Interix illegal option x86 Intel_x86_Family6_Model28_Stepping10 illegal option 10.0.7063.0 6.1
Interix, Subsystem for Unix-based Applications (SUA), AMD64 6.1 (Windows 2008 R2) Interix - genuineintel Intel64_Family_6_Model_26_Stepping_4 - 10.0.7063.0 6.1
IRIX IRIX illegal option IP22 mips illegal option
IRIX 6.5.30, Origin 2000 IRIX64 illegal option IP30

IP35

mips illegal option 07202013 6.5
Linux Mint 10 "Julia" 64-bit Linux GNU/Linux x86_64 Un­known Un­known #33-Ubuntu SMP Sun Sep 19 20:32:27 UTC 2010 2.6.35-22-generic
Linux on Xeon Phi Linux GNU/Linux k1om k1om k1om #2 SMP Fri Jun 21 13:43:31 EDT 2013 2.6.38.8-g2593b11
Mac OS X Panther 10.3, PowerBook G4 (2004) Darwin illegal option Power Macintosh powerpc illegal option Darwin Kernel Version 7.8.0: Wed Dec 22 14:26:17 PST 2004; root:xnu/xnu-517.11.1.obj~1/RELEASE_PPC 7.8.0
Mac OS X Snow Leopard 10.6, MacBook3,1 (Late 2007) Darwin illegal option i386 i386 illegal option Darwin Kernel Version 10.0.0: Fri Jul 31 22:47:34 PDT 2009; root:xnu-1456.1.25~1/RELEASE_I386 10.0.0
Mac OS X Lion 10.7.3 build 11D50, MacbookPro7,1 (Late 2010) Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 11.3.0: Thu Jan 12 18:47:41 PST 2012; root:xnu-1699.24.23~1/RELEASE_X86_64 11.3.0
OS X Mountain Lion 10.8.3 build 12D78, MacbookPro10,1 (Mid 2012) Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64 12.3.0
OS X Mavericks 10.9 build 13A598, MacbookPro5,1 (Mid 2009) Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64 13.0.0
OS X Yosemite 10.10 build 14A298i, MacbookPro6,2 (Mid 2010) Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 14.0.0: Tue Jul 15 23:56:31 PDT 2014; root:xnu-2782.1.43.0.2~1/RELEASE_X86_64 14.0.0
OS X El Capitan 10.11 build 15A284, MacBookPro10,1 (Mid 2012) Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 15.0.0: Sat Sep 19 15:53:46 PDT 2015; root:xnu-3247.10.11~1/RELEASE_X86_64 15.0.0
macOS Sierra 10.12 build 16E195, MacBookPro12,1 (Early 2015) Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 16.5.0: Fri Mar 3 16:52:33 PST 2017; root:xnu-3789.51.2~3/RELEASE_X86_64 16.5.0
macOS High Sierra 10.13.3 build 17D47, MacBookPro12,1 (Early 2015) Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 17.4.0: Sun Dec 17 09:19:54 PST 2017; root:xnu-4570.41.2~1/RELEASE_X86_64 17.4.0
macOS Mojave 10.14.3 build 18D109 Darwin illegal option x86_64 i386 illegal option Darwin Kernel Version 18.2.0: Thu Dec 20 20:46:53 PST 2018; root:xnu-4903.241.1~1/RELEASE_X86_64 18.2.0
macOS Catalina 10.15.5 build 19F101 Darwin Darwin x86_64 i386 MacBookPro15.1 Darwin Kernel Version 19.5.0: Tue May 26 20:41:44 PDT 2020; root:xnu-6153.121.2~2/RELEASE_X86_64 19.5.0
macOS Big Sur 11.0.1 build 20B29 on Apple M1 Darwin illegal option arm64 arm illegal option Darwin Kernel Version 20.1.0: Sat Oct 31 00:07:10 PDT 2020; root:xnu-7195.50.7~2/RELEASE_ARM64_T8101 20.1.0
macOS Monterey 12.2.1 build 21D62[7] on Apple M1 Darwin illegal option arm64 arm illegal option Darwin Kernel Version 21.3.0: Wed Jan 5 21:37:58 PST 2022; root:xnu-8019.80.24~20/RELEASE_ARM64_T8101 21.3.0
Manjaro Linux 0.8.11 64 bit Linux GNU/Linux x86_64 Un­known Un­known #1 SMP PREEMPT Sat Nov 15 10:54:42 UTC 2014 3.17.3-1-MANJARO
MidnightBSD 1.0, Intel MidnightBSD MidnightBSD amd64 amd64 [kernel name from kernel conf file. i.e.: GENERIC] MidnightBSD 1.0 #5 r11989M: Sat Aug 11 13:20:45 EDT 2018 root@stargazer.midnightbsd.org:/usr/obj/usr/src/sys/GENERIC 1.0
MINIX 3.1.7, x86 Minix illegal option i686 i386 illegal option 1.7 3
MinGW 32 bit (Windows 7) MINGW32_NT-6.1 Msys i686 Un­known Un­known 2018-11-26 09:22 2.11.2(0.329/5/3)
MinGW 64 bit (Windows 7) MINGW64_NT-6.1 Msys x86_64 Un­known Un­known 2018-11-26 09:22 2.11.2(0.329/5/3)
MSYS 32 bit (Windows 7) MSYS_NT-6.1 Msys i686 Un­known Un­known 2018-11-26 09:22 2.11.2(0.329/5/3)
MSYS 64 bit (Windows 7) MSYS_NT-6.1 Msys x86_64 Un­known Un­known 2018-11-26 09:22 2.11.2(0.329/5/3)
NetBSD NetBSD Un­known i386 i386 Un­known NetBSD 6.0.1 (GENERIC) 6.0.1
NonStop OS H06 25 NONSTOP_KERNEL Un­known NSE-T Un­known H06 25 Un­known
NonStop OS J06 14 NONSTOP_KERNEL Un­known NSE-AB Un­known J06 14 Un­known
OpenBSD 5.4 OpenBSD illegal option amd64 amd64 illegal option GENERIC.MP#1 5.4
openSUSE 10.3, Core2-duo 64-bit Linux GNU/Linux x86_64 x86_64 x86_64 #1 SMP 2007/09/21 22:29:00 UTC 2.6.22.5-31-default
OpenWRT Barrier Breaker r40420 on TL-WR1043ND Linux GNU/Linux mips Un­known unknown (-i)
invalid (-M) 		#1 Tue Apr 8 06:30:07 UTC 2014 3.10.34
QNX QNX – x86pc x86 – 2010/07/09-14:44:03EDT 6.5.0
Red Hat Linux, Fedora Core 6, AMD Turion64 mobile Linux GNU/Linux i686 athlon i386 #1 SMP Wed Jan 10 19:28:18 EST 2007 2.6.19-1.2895.fc6
ReliantUNIX ReliantUNIX-Y RM600 R4000 B2005 5.45
SINIX SINIX-Y RM600 R4000 5.43
Solaris 2.5.1 Intel Platform Edition SunOS Solaris i86pc i386 i86pc Generic_103641-42 5.5.1
Solaris 8 SunOS illegal option sun4u sparc SUNW,UltraAX-i2 Generic_117350-50 5.8
Solaris 9, Sun Fire 280R SunOS illegal option sun4u sparc SUNW,Sun-Fire-280R Generic_112233-08 5.9
Solaris 10, Sun Fire V490 SunOS illegal option sun4u sparc SUNW,Sun-Fire-V490 Generic_142900-13 5.10
Solaris 11.1, Sun Fire X4540 SunOS illegal option i86pc i386 i86pc 11.1 5.11
OpenIndiana SunOS illegal option i86pc i386 i86pc oi_151a8 5.11
OpenIndiana Hipster 2018.04 SunOS Solaris i86pc i386 i86pc illumos-47b8d4b884 5.11
OpenIndiana Hipster 2021.10 SunOS illumos i86pc i386 i86pc illumos-b12aaafbf5 5.11
SmartOS SunOS illegal option i86pc i386 i86pc joyent_20150403T203811Z 5.11
OmniOS SunOS illegal option i86pc i386 i86pc omnios-a708424 5.11
Tru64 OSF1 invalid alpha alpha invalid 2650 V5.1
Ubuntu 11.04 Linux GNU/Linux x86_64 x86_64 x86_64 #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC 2011 2.6.38-10-generic
Ubuntu 12.0.4 on Pandaboard ES Linux GNU/Linux armv7l armv7l armv7l #33-Ubuntu SMP PREEMPT Sat Jan 26 00:46:04 UTC 2013 3.2.0-1425-omap4
Ubuntu 20.0.4LTS on Raspberry Pi 4 Model B Linux GNU/Linux aarch64 aarch64 aarch64 #20-Ubuntu SMP Sun Sep 6 05:11:16 UTC 2020 5.4.0-1018-raspi
Ultrix ULTRIX – VAX – – 0 4.5
Unity Linux Linux GNU/Linux i686 Intel(R) Core(TM) i5-2520M CPU @ 2.50 GHz unknown (-i)
invalid (-M) 		#1 SMP Fri Oct 1 16:46:58 UTC 2010 2.6.35.7-unity1
UnxUtils 2007 32 bit (Windows Server 2008) WindowsNT illegal option x86 illegal option illegal option 6 0
(SCO) OpenServer 5.0.6 SCO_SV (hostname) i386 i386 illegal 5.0.6 3.2
(SCO) System V SCO_SV illegal i386 i386 illegal 6.0.0 5
(SCO) UnixWare 7.1.4 UnixWare illegal option i386 x86at -i hardware serial/license number, .e.g. 1AB000123 or NUL000000; -M is illegal option 7.1.4 5
UWIN (64 bit Windows 7), Intel Core i5 UWIN-W7 UWIN i686-64 x64 64/64 2012-06-26 5.0/6.1
SYS$UNIX:SH on OpenVMS on VAX emulator IS/WB illegal option vax-6340 illegal option illegal option std 5.0
z/OS USS OS/390 Un­known 2097 Un­known -i/-M: unknown option; -I: z/OS 03 22.00
Windows Subsystem for Linux (WSL), Ubuntu 18.04 Linux GNU/Linux x86_64 x86_64 x86_64 #476-Microsoft Fri Nov 01 16:53:00 PST 2019 4.4.0-18362-Microsoft
Windows Subsystem for Linux (WSL2), Ubuntu 20.04 Linux GNU/Linux x86_64 x86_64 x86_64 #1 SMP Wed Aug 25 23:20:18 UTC 2021 5.10.60.1-microsoft-standard-WSL2

See also[edit]

Footnotes[edit]

  1. ^ uname. The Open Group Base Specifications Issue 7/IEEE Std 1003.1, 2013 Edition. Specifies the command.
  2. ^ uname. The Open Group Base Specifications Issue 7/IEEE Std 1003.1, 2013 Edition. Specifies the function/system call.
  3. ^ uname(1) – Linux User Manual – User Commands
  4. ^ CoreUtils for Windows
  5. ^ Native Win32 ports of some GNU utilities
  6. ^ These are merely meant to broadly represent common systems; actual output may vary depending on hardware type, OS version, and which software patches have been installed.
  7. ^ Find out which macOS your Mac is using

External links[edit]

The Wikibook Guide to Unix has a page on the topic of: Commands
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