TOPS-20 Commands Reference Manual
Appendix C File attributes
This appendix lists the attributes that you can include in a file specification. The DECnet-related attributes are described in detail in the DECnet documentation. Information on file attributes is also contained in the TOPS-20 User's Guide, the TOPS-20 Monitor Calls Reference Manual, and the TOPS-20 Tape Processing Manual.
;A:account
System manager defined account string
;BDATA:user data
DECnet optional binary data
;BLOCK-LENGTH:n
Maximum size of a physical block on a labeled tape.
;BPASSWORD:password
DECnet binary password
;CHARGE:account
DECnet account string
;DATA:user data
DECnet optional data
;EXPIRATION-DATE:date
Date the magnetic tape file can be overwritten
;FORMAT:F,D,S, or U
Magnetic labeled tape record format:
- F=fixed-length
- D=variable-length
- S=spanned
- U=undefined
;OFF-LINE
Designation for a file that is off-line because of migration or
archiving
;P:n
File protection value
;PASSWORD:password
DECnet password
;POSITION:n
File sequence number for magnetic tape positioning
;RECORD-LENGTH:n
Maximum size of a magnetic labeled tape record
;T
Designation for a file that is to be deleted at log-out time (a
temporary file). Only for files in log-in and/or connected
directories.
;USERID:id
DECnet user ID string
Note that you can issue TOPS-20 commands as an alternative to specifying many of the file attributes. For example, SET FILE PROTECTION, rather than the P attribute, can be used to set the file protection. Also, such commands as INFORMATION FILE-STATUS and DIRECTORY (with the EVERYTHING subcommand) display your file attribute settings.