Radio Shack TRS-80 Model II Reference Manual page 27

Model II TRSDOS
Although name-extensions are optional, they are useful for identifying what
type of data is in the file. For example, you might want to use the following set
of extensions:
IBAS
ITXT
IOBJ
IF<EL
IDVR
WildCard
BASIC
program
ASCII
text
Object code
Relocatable machine-language program
Input/output driver
Source code
Certain library commands allow you to specify a collection offiles by using a
"wild-card" field in place of the file name and/or extension. An asterisk
"*,,
in a
file specification represents a wild-card field, and means, "any sequence of one or
more characters here' , .
Unless restrictions are stated for a command, wild-card fields may take any of the
following forms:
Wild-Card Fields
*
*string
string*
*string*
string
*
string
Where string is a sequence of characters. The overall length of the wild-card field
depends on whether it appears in the file name or file extension.
For example:
MOVE
*
/BAS:O TO :1
copies all files with the extension"
/BAS"
from drive 0 to drive 1.
DIR */COM:O
gives the drive zero directory, listing all user files with the extension'
'/COM". (DIR
allows a wild-card field onl y in place of the entire file name, and not in place of the
file extension.)
KILL *LST/*:O
kills all files with
"LST"
at the end ofthe file name, regardless of the other
characters in the name and extension.
TRSDOS
prompts you before deleting any file.
The wild-card option is available on the following commands:
KILL
MOVE
DIR
(wild-card field for entire file name only)
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