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document that repo only contains ksh93u+ and v- for #1466

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gordonwoodhull committed Feb 8, 2020
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AST
===
# AST

This is the AT&T Software Technology (AST) toolkit from AT&T Research.
It includes many tools and libraries, like KSH, NMAKE, SFIO, VMALLOC, VCODEX,
etc. It also includes more efficient replacements for a lot of the POSIX tools.
It was designed to be portable across many UNIX systems and also works
under UWIN on Microsoft Windows (see UWIN repo on GitHub under att/uwin).

This software is used to build itself, using NMAKE.
After cloning this repo, cd to the top directory of it and run:
## ksh93u+ and v-

This repo contains the **ksh93u+** and **ksh93v-** versions of KSH.

* **ksh93u+**, the master branch, was the last version released by the main AST
authors in 2012, while they were at AT&T. It also has some later build
fixes but it is not actively maintained.
* ksh93v-, [ksh93v tag](https://github.com/att/ast/tree/ksh93v), contains
contributions from the main authors through 2014 (after they left) and is
considered less stable

Please search the web for forks of this repo (or check the
[Network graph](https://github.com/att/ast/network) on GitHub) if you are
looking for an actively maintained version of ksh.

## Build

This software is used to build itself, using NMAKE. After cloning this repo, cd
to the top directory of it and run:

./bin/package make

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