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VMS Help Ext File Specs, Overview, Impact, DCL Commands and Utilities *Conan The Librarian |
In DCL commands, you can select either of the following styles
for parsing file specifications:
o Traditional filenames are allowed on both ODS-2 and ODS-5
volumes.
o Extended filenames are allowed on ODS-5 but not on ODS-2
volumes.
Some OpenVMS commands and utilities have new qualifiers to
control the interpretation and display of file specifications.
NOTE
DCL lexical functions use the DEC-Multinational character
set, which is different from the ISOLatin-1 character set
used for file names on an ODS-5 disk. This can lead to
unexpected results if, for example, you use the DCL function
F$EDIT to upcase a filename.
Some DCL commands and OpenVMS utilities have been specifically
modified to take advantage of all the features of extended file
names. These utilities and commands accept and handle extended
file specifications without error and without modifying their
expected case.
Other DCL commands and OpenVMS utilities have had little or
no modification to take advantage of extended file names.
These utilities and commands are expected to handle most of
the attributes of extended file specifications (such as new
characters and deep directory structures) correctly.
Extended File Specifications Support fully defines the different
levels of support for extended file names provided by DCL
commands and OpenVMS utilities in OpenVMS Version 7.2 and later.
The following DCL commands and OpenVMS utilities provide full
support for extended file names:
ANALYZE /AUDIT
ANALYZE /DISK
ANALYZE /RMS
BACKUP
CONVERT
CONVERT /RECLAIM
COPY
CREATE /DIRECTORY
DELETE
DIRECTORY
DUMP
EDIT /ACL
EXCHANGE /NETWORK
FDL
PURGE
RECOVER/RMS
RENAME
SEARCH
SET SECURITY
SYSMAN
TYPE
The following table lists the new features in DCL to support
Extended File Specifications.
DCL Command New Features
COPY Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
DELETE Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
DIRECTORY Added the following items:
o Qualifier, /STYLE, with new keywords,
EXPANDED and CONDENSED
o Display item to /FULL to display Client
Attributes
DUMP Added the following items:
o Display item to /DIRECTORY to display
Name type attribute
o Display item to /HEADER to display new
attributes
o Qualifier, /STYLE, with new keywords,
EXPANDED and CONDENSED
EXCHANGE NETWORK Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
F$FILE_ATTRIBUTES Added new item codes: FILE_LENGTH_HINT,
Lexical VERLIMIT, DIRECTORY
F$GETDVI Lexical Added new type to the ACPTYPE item code.
F$GETJPI Lexical Added new item codes: PARSE_STYLE_PERM and
PARSE_STYLE_IMAGE
INITIALIZE Added a new qualifier: /STRUCTURE=5
device-name[:] volume-label
PRINT Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
PURGE Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
RENAME Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
SEARCH Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
SET ACL Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
SET DEFAULT Updated the following items:
o Modified the directory-spec parameter
to accept ODS-5-compliant file
specifications.
SET DIRECTORY Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
SET FILE Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
SET PROCESS Added a new qualifier: /PARSE_
STYLE=(keyword), where keywords are
TRADITIONAL and EXTENDED.
SET SECURITY Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
SET VOLUME Added a new qualifier: /STRUCTURE_LEVEL=5
SHOW DEVICE/FULL Updated the display information to show
the disk structure level.
SUBMIT Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
TYPE Added new qualifier, /STYLE, with new
keywords, EXPANDED and CONDENSED
For detailed information about the enhancements made to the
OpenVMS operating system and utilities in support of Extended
File Specifications, see the OpenVMS DCL Dictionary: A-M, the
OpenVMS DCL Dictionary: N-Z, and the OpenVMS Utility Routines
Manual.
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