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6.2 Starting ED CP/M 3 User's Guide
The file specification, MYFILE.TEX in the preceding example, specifies a file to be
edited or created. The file specification can be preceded by a drive specification, but
a drive specification is unnecessary if the file to be edited is on your default drive.
Optionally, the file specification can be followed by a drive specification, as shown in
the following example:
A>ED MYFILE.TEX B:
In response to this command, ED opens the file to be edited, MYFILE.TEX, on
drive A, but sends all the edited material to a file on drive B.
Optionally, you can send the edited material to a file with a different filename, as
in the following example:
A>ED MYFILE.TEX YOURFILE.TEX
The file with the different filename cannot already exist or ED prints the following
message and terminates.
Output File Exists, Erase It
The ED prompt, *, appears at the screen when ED is ready to accept a command,
as follows
A>ED MYFILE.TEX
: *
If no previous version of the file exists on the current disk, ED automatically
creates a new file and displays the following message:
NEW FILE
: *
Note: before starting an editing session, use the SHOW command to check the
amount of free space on your disk. Make sure that the unused portion of your disk
is at least as large as the file you are editing, or larger if you plan to add characters
to the file. When ED finds a disk or directory full, ED has only limited recovery
mechanisms. These are explained in Section 6.7, "ED Error Messages."
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