====== USG PG-1C300 Issue 2  ======

**Release Date:** January, 1976\\
**Released By:** UNIX Support Group\\
**Source Code: ** None Available\\
**Documentation: ** [[https://www.tuhs.org/Archive/Distributions/USDL/unix_program_description_jan_1976.pdf|UNIX Program Description]] is a description of the various routines in the Issue 2 kernel\\

UNIX Program Generic Issue 2, otherwise known as PG-1C300, is a version of the UNIX operating system issued by the UNIX Support Group in January of 1976. The Program Generic line was used as a standard, supported UNIX base on which to base other projects and supply a computing environment to a larger group of users than the Research group could support.

Very little is known about this version.  Anecdotally, the init system is similar to that in Research UNIX.  The later [[systems:usg3|Issue 3]] system is partially documented in the [[systems:mert0|MERT Release 0]] manual.