Red Hat NETSCAPE MANAGEMENT SYSTEM 6.01 - CUSTOMIZATION Manual de Serviço descarregar pdf (Página 12)

LEGATO NetWorker, Release 6.0.1-x, HP OpenVMS Version

Release Supplement

Chapter 1: NetWorker Software Release 6.0.1-D

• OpenVMS Guide to Extended File Specifications (for OpenVMS Alpha Version 7.2)

These documents are accessible from the following web site (as of the date of

publication of this manual):

http://h71000.www7.hp.com/doc/os731_index.html

Note: While some of the features described here were released with OpenVMS Version

7.2, some enhancements to these features were not added until OpenVMS Version

7.3-1. For the most part, the information in this section assumes the use of OpenVMS

Version 7.3-1. To determine which features and/or enhancements are available only in

Version 7.2, refer to the OpenVMS documentation.

About Longer Filenames and Additional Character Sets

On ODS-5 volumes, filenames (excluding the version number) can be up to 236 8-bit

characters or 118 16-bit characters in length. Filenames on ODS-5 volumes can also

contain characters from the 8-bit ISO-LATIN1 and 16-bit Unicode (UCS-2) character

sets, in addition to the ODS-2 compliant character set.

Filenames on ODS-2 volumes continue to use traditional filename syntax, where

filename length is limited to the 39.39 format and valid filename characters are

restricted to the ODS-2-compliant character set: A-Z, a-z, 0-9, $, _, and - (dollar sign,

underscore, and hyphen).

Note: Because some ODS-5 file names can use characters not found in the ODS-2

character set, these filenames may be changed when you restore ODS-5 files to an

ODS-2 volume. This is necessary to permit creation of these files on the ODS-2 device.

Additionally, file attributes specific to ODS-5 and not available on ODS-2 will not be

restored.

About Case Sensitivity

Traditionally, the OpenVMS operating system has stored all filenames in all uppercase

and ignored filename case during filesystem operations. The introduction of extended

file specifications in OpenVMS Version 7.2 enabled applications to store and display

file specifications in mixed case on ODS-5 volumes. (Note that ODS-2 continues to

support uppercase characters only.)

Until the release of OpenVMS Version 7.3-1, filesystem operations remained case

insensitive. OpenVMS Version 7.3-1 enhanced the case sensitivity features on ODS-5

volumes to enable applications and system tools to distinguish among filename

specifications that differ in case only.

You can set the DCL process to ignore or recognize case sensitivity with the following

command:

$ SET PROCESS /CASE_LOOKUP={BLIND|SENSITIVE}

/PARSE_STYLE=EXTENDED

The default case lookup type is BLIND.

Note: When issuing commands in a case-sensitive process environment, be aware that

only those filenames matching the specified name and case are returned.

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