HP 3000 Manuals HP 3000 Manuals
POSIX News In Brief by Mike Paivinen Commercial Systems Division This is a guide to the POSIX articles in this Communicator. The articles are grouped under different headings to help you quickly see which articles may be of interest to you. If You Are New to POSIX and the HFS Read "The Hierarchical File System" and "MPE/iX File Access and Security Enhancements" for an overview of the MPE/iX extensions that were added to support POSIX, including the Hierarchical File System (HFS). If you want to know what changes have been made to the standard MPE/iX intrinsics and commands, read "MPE/iX New and Enhanced Intrinsics" and "New CI Commands". For information on a computer-based training program for POSIX read "POSIX Computer-Based Training". For POSIX or POSIX-Related Application Developers POSIX or POSIX-related application developers must recompile and relink their applications on MPE/iX General Release 5.0. Refer to the technical article, "MPE/iX Shared Globals Technical Overview", for more information. For the System Manager The article, "Managing a 5.0 POSIX HP 3000 System", describes how the new POSIX environment on MPE/iX affects the HP 3000 system manager. Other articles of interest to the system manager concerned about POSIX are "POSIX Computer-Based Training", "The UID/GID Databases Enhanced", "TurboSTORE/iX Changes", "Creating Pre-POSIX Compatible Tapes", and "System Logging Changes". POSIX disk space requirements are discussed in the article, "MPE/iX Release 5.0 Disk Space Requirements". For the Open Systems Programmer The POSIX.1 interfaces and POSIX.2 commands and utilities are highlighted in the articles, "General POSIX Release Shipping with MPE/iX 5.0", "Introducing the MPE/iX Shell and Utilities", and "MPE/iX Developer's Kit: New Functionality". Other open systems interfaces are discussed in the articles, "Curses Library Now Available on MPE/iX", "System V Interprocess Communication", "HP Motif/iX(TM) Enhancements", and "HP Symbolic Debugger (xdb) Enhancements". New File Types Several new file types have been added since MPE/iX Release 4.0. A summary of the new file types can be found in the article, "The Hierarchical File System". Additional details on several of these file types can be found in "Symbolic Links on MPE/iX", "Enhancements to Support Special and Device Files", and "Byte-Stream Emulation". 4.5 Restrictions Removed Read the two articles, "Files and Directories Under MPE/iX Accounts" and "Loading Programs and XLs from HFS", for information on restrictions removed. Incompatibilities Between 4.5 and 5.0 The incompatibilities between 4.5 and 5.0 are highlighted throughout several articles. Section 1 of this Communicator, "MPE/iX Release 5.0 (C.50.00) Overview", describes the major differences. Networking Limitations Read the article, "NS/3000 and POSIX File Limitations", for a brief summary of networking limitations with POSIX or HFS filenames.