Portable OpenBSD ksh, based on the Public Domain Korn Shell (pdksh).
ksh(1). Not an official OpenBSD project.
Because all operating systems deserve a good shell.
Unlike other ports of OpenBSD ksh, this port is entirely self-contained and aims to be maximally portable across operating systems and C compilers. We are always looking for new combinations to add support for.
okshis known to run on the following Operating Systems: * OpenBSD * FreeBSD * DragonFly BSD * NetBSD * HardenedBSD * SoloBSD (as the default shell) * Mac OS X (port originally by @geoff-nixon) * Linux (glibc and musl) * Cygwin * Android (via Termux) * AIX (with major thanks to @tssva and @NattyNarwhal) * IBM i PASE * Solaris * Illumos * midipix * WSL * WSL2 * Unixware 7 * Haiku * HP-UX (gcc only) * SerenityOS
Running on a system not listed here? Add it and send a pull request!
We believe that
okshwill work on the following platforms, but testing is needed. Help is greatly appreciated and encouraged! * Irix
okshis known to build with the following C compilers: * clang * gcc * pcc * cparser * xlc * Sun Studio compiler * lacc * Optimizing C Compilation System (CCS) 4.2 03/27/14 (uw714mp5.bl4s) * Tiny C Compiler * CompCert * Nils Weller's C compiler * cproc (Currently requires a small tweak to ignore a volatile store error)
Building with a compiler not listed here? Add it and send a pull request!
okshis included in some package systems.
Using a package not listed here? Add it and send a pull request!
A C99 compiler is the easiest way to ensure that
okshwill build correctly. Please see the list of C compilers above for a list of known working compilers.
Though not required, the
ncurseslibrary will be used for screen clearing routines if the library is found during the
configurestage. This can be turned off by the user by passing the
configurescript that produces a
Makefileis provided to ease building and installation and can be run by:
$ ./configure $ make && sudo make install
Cross compiling can be achieved by running
CC=/path/to/cross/cc CFLAGS="any needed cflags" LDFLAGS="any needed ldflags" ./configure --no-thanks
This will skip all
configurechecks and write out a generic
pconfig.hwith nearly no options turned on. If using a cross gcc or clang, this very well may just work (with all compat compiled in). You can edit these files to reflect your system before running
All environment variables and configure flags are respected when using
--no-thanks. Further specifying
--no-thankswill only compile the source files into object files, to be transfered onto the target machine and linked there.
--no-thanksflag can also be used to compile a native
okshwith all the compatibility functions compiled in, rather than relying on the system's version of those functions.
Patches that add new platforms and improve support for existing platforms are always welcome.
Patches that cause
okshto deviate from upstream OpenBSD ksh behavior are better suited to be sent to the OpenBSD [email protected] mailing list. Please make sure to test your patch on an OpenBSD machine first before submitting it to [email protected] I will sync with the upstream OpenBSD code once your patch is accepted. If you'd like to open an issue here to track progress of your patch on [email protected], that's fine.
The main Korn shell files are public domain (see
LEGAL). Portability files are BSD or ISC licensed; see individual file headers for details.
See releases tab. The latest release is oksh-7.0, which matches the ksh(1) from OpenBSD 7.0, released October 14, 2021.