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1984-08-27
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LUU Command
-----------
Purpose: Add or replace members in an LU or LAR type library.
Format: LUU [d:][path]filename[.ext] filename[.ext]
Remarks: The library name and at input member file name must
be supplied. Only one member name is allowed, so far.
Notes: Written for the IBM PC using DOS 2.0 or later.
Copyright (c) 1984 by Vernon Buerg, for public domain use.
Version 1.2, August 1, 1984.
LUU duplicates the A(dd) and U(pdate) functions of LU.
When used with LUT and LUE, original file dates are
preserved and recorded.
The advantages of LUU are:
- smaller, so a copy can be kept on the "system" disk
- faster, mucho
- handles paths and wildcards
- retains input file (or member) date/time
- replaces in place (later)
Examples:
LUU a:AQM.LBR b:*.AQM
LUU PCT366.LBR b:PCT366.*
LUU c:\test\source.lbr b:ab??xx.*
File Formats:
An LBR file consists of a directory and one or more
"members". The directory contains from 4 to 256 entries.
Each entry is 32 bytes long and describes a member, if
one exists.
The first directory entry describes the directory
itself. Thus, the number of entries allocated is increased
by one.
All space allocation is in terms of sectors. Each
sector is 128 bytes long. Four directory entries fit
in one sector, so the directory is allocated in multiples
of four.
Directory format
----------------
0 - File status; 0=active, 254=deleted, 255=free
1 - Member name; filename in FCB format
12 - Offset to data in sectors of 128 bytes
14 - Length of member in sectors.
16 - Original member file creation date, MM/DD/YY
24 - Original member file creation time, HH:MM:SS
Press ENTER to continue: r file creation date, MM/DD/YY
24 - Original member file creation time, HH:MM:SS
Press ENTER to c