Commodore 1581 - Locked Files; Rename Command

Locked Files
Occasionally, a diskette will contain a locked file; one which
cannot be erased with the SCRATCH command. Such files may be
recognized by the "<" character which immediately follows the file
type in their directory entry. If you wish to erase a locked file, you will
have to use a sector editor program to clear bit 6 of the file-type byte in
the directory entry on the diskette. Conversely, to lock a file, you
would set bit 6 of the same byte.
RENAME
The RENAME command allows you to alter the name of a program or
other file in the diskette directory. Since only the directory is affected,
RENAME works very quickly.
FORMAT FOR RENAME COMMAND:
PRINT#15,"RENAME0:new name = old name"
or it may be abbreviated as:
PRINT#15,"R0:new name = old name"
where "new name" is the name you want the file to have, and "old
name" is the name it has now. "new name" may be any valid file name,
up to 16 characters in length. It is assumed you have already opened
file 15 to the command channel.
One caution—be sure the file you are renaming has been proper
ly closed before you rename it.
EXAMPLES:
Just before saving a new copy of a "calendar" program, you might type:
PRINT#15,"R0:CALENDAR/BACKUP = CALENDAR"
Or to move a program called "BOOT," currently the first program on a
diskette to someplace else in the directory, you might type:
PRINT#15,"R0:TEMP = BOOT"
followed by a COPY command (described later), which turns "TEMP"
into a new copy of "BOOT," and finishing with a SCRATCH command
to get rid of the original copy of "BOOT."
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