Format for File Names
Upper and Lower Case Considerations
  Table of Contents  v-24.01.01 - fncase01.htm 
  Introduction
  The Command File
  Summary
  Software Agreement and Disclaimer
  Downloads and Links
  Current Server or Internet Access
  Internet Access Required
  Glossary of Terms
  Contact or Feedback
  Company Overview
The SimoTime Home Page 

Table of Contents Previous Section Next Section Introduction

When business processes are shared or moved across multiple systems of varying architectures the management of file naming conventions will need to be addressed.

Platform File Naming Guidelines (Size and Case Preferences)
Mainframe Uses upper case letters with digits and some special characters. The length of the physical file name is 44 characters (and possibly 54 characters for PDS Members). The physical file name is mapped to a logical file name using a DD statement in JCL. The length of the DD name is 8 characters.
Windows Uses upper and lower case letters with digits and some special characters and is not case sensitive. Windows usually limits physical file names to 260 characters. The physical file name must actually be shorter since the complete path (such as C:\directory\filename.txt) is included in this character count.
Linux/UNIX Uses upper and lower case letters with digits and some special characters and is case sensitive. Usually the maximum length is 255 and this does not include the path.
  Upper /Lower Case and Size Considerations for File Names

Since we are moving and/or sharing data files across various systems we try to manage to the least common size for file names. As a guideline we use 54 as a limit for physical file names. As a guideline for a fully qualified file name that includes the path and a possible extension we set the limit to 240 characters. This gives us a few remaining characters to handle possible exceptions. Also, we avoid using embedded space characters in file names.

When moving source members between a Mainframe System and a Linux, UNIX or Windows System we use upper case for the physical file name and lower case for the extension.


We have made a significant effort to ensure the documents and software technologies are correct and accurate. We reserve the right to make changes without notice at any time. The function delivered in this version is based upon the enhancement requests from a specific group of users. The intent is to provide changes as the need arises and in a timeframe that is dependent upon the availability of resources.

Copyright © 1987-2025
SimoTime Technologies and Services
All Rights Reserved

Table of Contents Previous Section Next Section The Command File

The following (FNCASEW1.cmd) is the Windows command file that will run the program that does the case conversion and rename the file if necessary.

@echo OFF
echo *********************************************************************
echo *              FNCASEW1.cmd - a Windows Command File                *
echo *        This program is provided by SimoTime Technologies          *
echo *           (C) Copyright 1987-2016 All Rights Reserved             *
echo *             Web Site URL:   http://www.simotime.com               *
echo *                   e-mail:   helpdesk@simotime.com                 *
echo *********************************************************************
rem  *
rem  * This command will read a file that contains a list of file or
rem  * source member names. The alphabetic case (UPPER or lower) will
rem  * be set for the file name and extension based on a user-defined
rem  * set of parameters.
rem  *
rem  * This procedure calls the following Windows Command Files.
rem  * 1. Env1Base.cmd - this provides a single point for setting commonly
rem  *                   used environment variables.
rem  * 2. SimoNOTE.cmd - this provides a consistent process for displaying
rem  *                   messages to the screen and writing to a journal
rem  *                   or log file.
rem  * *******************************************************************
     setlocal
     call ..\ENV1BASE
     set EXTFH=
     set CmdName=FNCASEW1
     set JobStatus=0000
rem  *
     call SimoNOTE "*******************************************%CmdName%.cmd"
     call SimoNOTE "Starting JobName %CmdName%.cmd"
rem  *
     set FNCASEBEHAVIOR=UL\
     set CASELIST=%BASELIB1%\ADM1\DATA\TXT1\CASELIST.txt
rem  * goto :DEBUG
rem  *
rem  * Set case for members in the following directory .........COBCPY6
     set SLIB1=%BASELIB1%\CobCpy6
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0010
rem  *
rem  * Set case for members in the following directory ...........COBOL
     set SLIB1=%BASELIB1%\COBOL
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
rem  * Set case for members in the following directory ........COBOLCS1
     set SLIB1=%BASELIB1%\COBOLCS1
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
rem  * Set case for members in the following directory ........COBOLSQ1
     set SLIB1=%BASELIB1%\COBOLSQ1
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
rem  * Set case for members in the following directory ........COBOLUT1
     set SLIB1=%BASELIB1%\COBOLUT1
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
rem  * Set case for members in the following directory ........COBOLUT2
     set SLIB1=%BASELIB1%\COBOLUT2
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
rem  * Set case for members in the following directory ........COBOLUT3
     set SLIB1=%BASELIB1%\COBOLUT3
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
rem  * Set case for members in the following directory ............DIRS
     set SLIB1=%BASELIB1%\DIRS
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
     set SLIB1=%BASELIB1%\DIRS\ASC1
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
     set SLIB1=%BASELIB1%\DIRS\DIR3
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
     set SLIB1=%BASELIB1%\DIRS\EBC1
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0020
rem  *
rem  * Set case for members in the following directory .........PARMLIB
     set SLIB1=%BASELIB1%\PARMLIB
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0030
rem  *
rem  * Set case for members in the following directory .........REXXLIB
     set SLIB1=%BASELIB1%\REXXLIB
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0030
rem  *
rem  * Set case for members in the following directory .........LOADLIB
     set SLIB1=%BASELIB1%\LOADLIB
     dir /on /b %SLIB1%\*.CMD>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0040
rem  *
rem  * Set case for members in the following directory ............SYS1
:DEBUG
     set SLIB1=%BASELIB1%\SYS1\CONFIG
     dir /on /b %SLIB1%\*.CFG>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0081
     goto :EOJAOK
pause
rem  *
     set SLIB1=%BASELIB1%\SYS1\JCL
     dir /on /b %SLIB1%\*.JCL>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0082
rem  *
     set SLIB1=%BASELIB1%\SYS1\LOADLIB
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0082
rem  *
rem  * Set case for members in the following directory ........CONVERTS
     set SLIB1=%BASELIB1%\CONVERTS
     dir /on /b %SLIB1%\*.*>%CASELIST%
     run FNCASEC1
     if not "%ERRORLEVEL%" == "0" set JobStatus=0081
rem  *
     if  "%JobStatus%" == "0000" goto :EOJAOK
rem  *
:EOJNOK
     call SimoNOTE "ABENDING JobName %CmdName%.cmd JobStatus %JobStatus%"
     goto EOJEND
:EOJAOK
     call SimoNOTE "Finished JobName %CmdName%.cmd"
:EOJEND
     endlocal
pause

Table of Contents Previous Section Next Section Summary

When business processes are shared or moved across multiple systems of varying architectures the management of file naming conventions will need to be addressed. This document may be used as a tutorial for new programmers or as a quick reference for experienced programmers.

In the world of programming there are many ways to solve a problem. This documentation and software were developed and tested on systems that are configured for a SIMOTIME environment based on the hardware, operating systems, user requirements and security requirements. Therefore, adjustments may be needed to execute the jobs and programs when transferred to a system of a different architecture or configuration.

SIMOTIME Services has experience in moving or sharing data or application processing across a variety of systems. For additional information about SIMOTIME Services or Technologies please contact us using the information in the  Contact or Feedback  section of this document.

Table of Contents Previous Section Next Section Software Agreement and Disclaimer

Permission to use, copy, modify and distribute this software, documentation or training material for any purpose requires a fee to be paid to SimoTime Technologies. Once the fee is received by SimoTime the latest version of the software, documentation or training material will be delivered and a license will be granted for use within an enterprise, provided the SimoTime copyright notice appear on all copies of the software. The SimoTime name or Logo may not be used in any advertising or publicity pertaining to the use of the software without the written permission of SimoTime Technologies.

SimoTime Technologies makes no warranty or representations about the suitability of the software, documentation or learning material for any purpose. It is provided "AS IS" without any expressed or implied warranty, including the implied warranties of merchantability, fitness for a particular purpose and non-infringement. SimoTime Technologies shall not be liable for any direct, indirect, special or consequential damages resulting from the loss of use, data or projects, whether in an action of contract or tort, arising out of or in connection with the use or performance of this software, documentation or training material.

Table of Contents Previous Section Next Section Downloads and Links

This section includes links to documents with additional information that are beyond the scope and purpose of this document. The first group of documents may be available from a local system or via an internet connection, the second group of documents will require an internet connection.

Note: A SimoTime License is required for the items to be made available on a local system or server.

Table of Contents Previous Section Next Section Current Server or Internet Access

The following links may be to the current server or to the Internet.

Note: The latest versions of the SimoTime Documents and Program Suites are available on the Internet and may be accessed using the Link to Internet icon. If a user has a SimoTime Enterprise License the Documents and Program Suites may be available on a local server and accessed using the Link to Server icon.

Link to Internet   Link to Server   Explore an Extended List of Software Technologies that are available for review and evaluation. The software technologies (or Z-Packs) provide individual programming examples, documentation and test data files in a single package. The Z-Packs are usually in zip format to reduce the amount of time to download.

Link to Internet   Link to Server   Explore The ASCII and EBCDIC Translation Tables. These tables are provided for individuals that need to better understand the bit structures and differences of the encoding formats.

Link to Internet   Link to Server   Explore The File Status Return Codes that are used to interpret the results of accessing VSAM data sets and/or QSAM files.

Table of Contents Previous Section Next Section Internet Access Required

The following links will require an internet connect.

This suite of programs and documentation is available to download for review and evaluation purposes. Other uses will require a SimoTime Software License. Link to an Evaluation zPAK Option that includes the program members, documentation and control files.

A good place to start is The SimoTime Home Page for access to white papers, program examples and product information. This link requires an Internet Connection

Explore The Micro Focus Web Site for more information about products (including Micro Focus COBOL) and services available from Micro Focus. This link requires an Internet Connection.

Table of Contents Previous Section Next Section Glossary of Terms

Link to Internet   Link to Server   Explore the Glossary of Terms for a list of terms and definitions used in this suite of documents and white papers.

Table of Contents Previous Section Next Section Contact or Feedback

This document was created and is maintained by SimoTime Technologies. If you have any questions, suggestions, comments or feedback please use the following contact information.

1. Send an e-mail to our helpdesk.
1.1. helpdesk@simotime.com.
2. Our telephone numbers are as follows.
2.1. 1 415 763-9430 office-helpdesk
2.2. 1 415 827-7045 mobile

 

We appreciate hearing from you.

Table of Contents Previous Section Next Section Company Overview

SimoTime Technologies was founded in 1987 and is a privately owned company. We specialize in the creation and deployment of business applications using new or existing technologies and services. We have a team of individuals that understand the broad range of technologies being used in today's environments. Our customers include small businesses using Internet technologies to corporations using very large mainframe systems.

Quite often, to reach larger markets or provide a higher level of service to existing customers it requires the newer Internet technologies to work in a complementary manner with existing corporate mainframe systems. We specialize in preparing applications and the associated data that are currently residing on a single platform to be distributed across a variety of platforms.

Preparing the application programs will require the transfer of source members that will be compiled and deployed on the target platform. The data will need to be transferred between the systems and may need to be converted and validated at various stages within the process. SimoTime has the technology, services and experience to assist in the application and data management tasks involved with doing business in a multi-system environment.

Whether you want to use the Internet to expand into new market segments or as a delivery vehicle for existing business functions simply give us a call or check the web site at http://www.simotime.com


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Format Guidelines for File Names, Upper and Lower Case Considerations
Copyright © 1987-2025
SimoTime Technologies and Services
All Rights Reserved
When technology complements business
http://www.simotime.com