 The uname command on UNIX System V | |
| Developer(s) | AT&T Bell Laboratories, David MacKenzie. |
|---|---|
| Operating system | Unix and Unix-like |
| Platform | Cross-platform |
| Type | Command |
| License | coreutils: 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.
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]
setname program, used to change the values that uname reports. ver command found in operating systems such as DOS, OS/2 and Microsoft Windows is similar to the uname command.OSTYPE and HOSTTYPE whose values are similar to those of uname -o and uname -m respectively.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 i386The 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 | style="background:#FFC7C7;vertical-align:middle;text-align:center;" class="table-no"|illegal option | CRAY Y-MP | style="background:#FFC7C7;vertical-align:middle;text-align:center;" class="table-no"|illegal option | style="background:#FFC7C7;vertical-align:middle;text-align:center;" class="table-no"|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 | style="background:#FFC7C7;vertical-align:middle;text-align:center;" class="table-no"|illegal option | i686 | style="background:#FFC7C7;vertical-align:middle;text-align:center;" class="table-no"|illegal option | style="background:#FFC7C7;vertical-align:middle;text-align:center;" class="table-no"|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 |
| File system | |
|---|---|
| Processes | |
| User environment | |
| Text processing | |
| Shell builtins | |
| Searching | |
| Documentation | |
| Software development | |
| Miscellaneous | |
| |
The Portable Operating System Interface is a family of standards specified by the IEEE Computer Society for maintaining compatibility between operating systems. POSIX defines both the system and user-level application programming interfaces (APIs), along with command line shells and utility interfaces, for software compatibility (portability) with variants of Unix and other operating systems. POSIX is also a trademark of the IEEE. POSIX is intended to be used by both application and system developers.
The Single UNIX Specification (SUS) is a standard for computer operating systems, compliance with which is required to qualify for using the "UNIX" trademark. The standard specifies programming interfaces for the C language, a command-line shell, and user commands. The core specifications of the SUS known as Base Specifications are developed and maintained by the Austin Group, which is a joint working group of IEEE, ISO/IEC JTC 1/SC 22/WG 15 and The Open Group. If an operating system is submitted to The Open Group for certification, and passes conformance tests, then it is deemed to be compliant with a UNIX standard such as UNIX 98 or UNIX 03.
uniq is a utility command on Unix, Plan 9, Inferno, and Unix-like operating systems which, when fed a text file or standard input, outputs the text with adjacent identical lines collapsed to one, unique line of text.
basename is a standard computer program on Unix and Unix-like operating systems. When basename is given a pathname, it will delete any prefix up to the last slash ('/') character and return the result. basename is described in the Single UNIX Specification and is primarily used in shell scripts.
The ln command is a standard Unix command utility used to create a hard link or a symbolic link (symlink) to an existing file or directory. The use of a hard link allows multiple filenames to be associated with the same file since a hard link points to the inode of a given file, the data of which is stored on disk. On the other hand, symbolic links are special files that refer to other files by name.
In computing, touch is a command used to update the access date and/or modification date of a computer file or directory. It is included in Unix and Unix-like operating systems, TSC's FLEX, Digital Research/Novell DR DOS, the AROS shell, the Microware OS-9 shell, and ReactOS. The command is also available for FreeDOS and Microsoft Windows.
dd is a command-line utility for Unix, Plan 9, Inferno, and Unix-like operating systems and beyond, the primary purpose of which is to convert and copy files. On Unix, device drivers for hardware and special device files appear in the file system just like normal files; dd can also read and/or write from/to these files, provided that function is implemented in their respective driver. As a result, dd can be used for tasks such as backing up the boot sector of a hard drive, and obtaining a fixed amount of random data. The dd program can also perform conversions on the data as it is copied, including byte order swapping and conversion to and from the ASCII and EBCDIC text encodings.
join is a command in Unix and Unix-like operating systems that merges the lines of two sorted text files based on the presence of a common field. It is similar to the join operator used in relational databases but operating on text files.
tr is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. It is an abbreviation of translate or transliterate, indicating its operation of replacing or removing specific characters in its input data set.
wc is a command in Unix, Plan 9, Inferno, and Unix-like operating systems. The program reads either standard input or a list of computer files and generates one or more of the following statistics: newline count, word count, and byte count. If a list of files is provided, both individual file and total statistics follow.
pax is an archiving utility available for various operating systems and defined since 1995. Rather than sort out the incompatible options that have crept up between tar and cpio, along with their implementations across various versions of Unix, the IEEE designed new archive utility pax that could support various archive formats with useful options from both archivers. The pax command is available on Unix and Unix-like operating systems and on IBM i, and Microsoft Windows NT until Windows 2000.
cksum is a command in Unix and Unix-like operating systems that generates a checksum value for a file or stream of data. The cksum command reads each file given in its arguments, or standard input if no arguments are provided, and outputs the file's 32-bit cyclic redundancy check (CRC) checksum and byte count. The CRC output by cksum is different from the CRC-32 used in zip, PNG and zlib.
df is a standard Unix command used to display the amount of available disk space for file systems on which the invoking user has appropriate read access. df is typically implemented using the statfs or statvfs system calls.
In computing, cmp is a command-line utility on Unix and Unix-like operating systems that compares two files of any type and writes the results to the standard output. By default, cmp is silent if the files are the same; if they differ, the byte and line number at which the first difference occurred is reported. The command is also available in the OS-9 shell.
In computing, tee is a command in command-line interpreters (shells) using standard streams which reads standard input and writes it to both standard output and one or more files, effectively duplicating its input. It is primarily used in conjunction with pipes and filters. The command is named after the T-splitter used in plumbing.
yes is a command on Unix and Unix-like operating systems, which outputs an affirmative response, or a user-defined string of text, continuously until killed.
test is a command-line utility found in Unix, Plan 9, and Unix-like operating systems that evaluates conditional expressions. test was turned into a shell builtin command in 1981 with UNIX System III and at the same time made available under the alternate name [.
In computing, sleep is a command in Unix, Unix-like and other operating systems that suspends program execution for a specified time.
In computing, whoami is a command found on most Unix-like operating systems, Intel iRMX 86, every Microsoft Windows operating system since Windows Server 2003, and on ReactOS. It is a concatenation of the words "Who am I?" and prints the effective username of the current user when invoked.
In computing, which is a command for various operating systems used to identify the location of executables. The command is available in Unix and Unix-like systems, the AROS shell, for FreeDOS and for Microsoft Windows. The functionality of the which command is similar to some implementations of the type command. POSIX specifies a command named command that also covers this functionality.
