Gasboy CFN III Manager Manual V3.6 - Manual (Page 174)

CFN3 File System File System
Page 17-2 MDE-4871 CFN III Manager’s Manual for Windows® XP Embedded - Version 3.6 · August 2010
The following characters are not allowed in XP or MS-DOS filenames:
* = + [ ] ; : “ | \ / , < >?
The CFN3 application does allow some of these characters, but you must avoid using them to
maintain XP or MS-DOS compatibility.
Filename Extensions
For executable files, the CFN3 application uses a different extension than Windows XP or
MS-DOS does, to avoid confusion between the two systems. Command files (also called batch
files) for the CFN3 application use the extension .CMD (similar to Windows XP). Executable
files use the extension .BIN.
Extension File Type
BIN executable program
CMD interpretable list of commands
CFG system configuration file - NEVER DELETE!
Never delete a file with a .CFG extension.
CAUTION
Wildcards in Filenames
You can use wildcard characters to match a group of filenames. A ? (question mark) matches
any single character. For example, ??.TXT matches all filenames with two letters and the
extension TXT.
An * (asterisk) matches one or more characters up to the end of the filename, or up to the
extension if there is one. For example, *.* matches every filename and extension, *.DTA
matches every filename with the extension DTA and PR*.CMD matches every filename that
begins with PR and has the extension CMD.
File System
The CFN3 application uses a hierarchical file system similar to the file system used by
MS-DOS version 2.0 and later versions, such as 3.3 and 6.0. This type of file system is often
described as being like a tree, with a root and branches. The file system is made up of
directories, and each directory can contain files and further directories-thus the tree-branching
analogy (the structure is really more like a bush, since it has no trunk).
Different directories may contain files having the same filenames. In order to uniquely identify
a file, its full name-called the pathname-is used. The pathname includes the directory (and any
subdirectories) that contains the file; for example:
/directoryname/subdirectoryname/filename.