File Names and DOS
File names in DOS are limited to eight characters. If you issue a command to change the name of the configuration files in the 9700 directory to a name exceeding eight characters, the name is truncated to eight characters. The
DOS Commands
DOS commands are divided into two groups. Because of the large number of DOS commands available, only the most commonly used commands are loaded into memory (RAM). The remaining commands reside in the DOS directory. The commands loaded into memory are called internal commands and the commands in the DOS directory are called external commands. When DOS reads a command, it looks first in RAM, then it looks in the DOS directory, and then it looks in the directory from which the command was issued. If you invoke an executable type file that isn’t in any one of those places, you must navigate to the directory in which the executable file is located.
The Path Statement
As an alternative to navigating to the directory in which an executable file is located, you can put a PATH command statement into the AUTOEXEC.BAT file. The PATH statement directs DOS to look in each of the directory paths listed there for any executable [.EXE, .COM or .BAT file] it is instructed to carry out. The syntax of the PATH statement is as follows:
PATH = { [drive:]path; [drive:]path; [drive:]path…..] }
Example: PATH=c:\;c:\dos;c:\windows
(Note that spacing is included in the syntax statement to make it easier to see the elements that make up the path statement. In actual use, no spaces exist, as demonstrated in the example.)
Semicolons (;) separate
Note that you cannot insert the directory path for the CM9700 executable file into the PATH statement. The CM9700 executable uses a non- executable file that always resides in the C:\9700 directory. If you invoked the CM9700 executable from any directory location other than the C:\9700 directory, the executable would not finish successfully because CM9700.EXE expects to find the file residing in the same directory that it does. You can manually invoke the command (CM9700 test) while in the C:\9700 directory, but in most cases, you need to reboot the CPU, and as a result, DOS boots to the root directory. That is why the CD command to switch to the 9700 directory is included in the AUTOEXEC.BAT file. If you used the PATH command statement alone, the CM9700.EXE would be found, but the other
Navigating the DOS Directory Tree
When you exit to DOS on the CC1, you are normally at the C:\9700> screen prompt. While in the directory, you may manipulate any file there or you may navigate to any subdirectory contained in that directory.
To navigate to a subdirectory of the 9700 directory, use the following syntax:
C:\9700> CD [subdirectory name] [ENTER]
For example, if a 9700 subdirectory had the name BKUPTST, your entry would read as follows:
C:\9700> CD BKUPTST [ENTER]
This takes you to the C:\9700\BKUPTST> screen prompt in the BKUPTST directory:
Once in the C:\9700\BKUPTST> prompt, files within the directory can be manipulated. The key entries used to backtrack up the directory tree depend on where you want to go. From the BKUPTST directory, you either can go back to the root directory with one single key entry or you can go in steps, one directory at a time. To proceed directly to the root directory, enter the following:
C:\9700\BKUPTST> CD\ [ENTER]
The “ \ ” symbol, when used alone represents the root directory; otherwise, it indicates separation of various levels of the directory tree, collectively known as the directory path. The result of the above entry takes you directly to the root directory and the “C:\>” screen prompt:
To backtrack up the directory tree one directory at a time, enter the following at the system prompt:
C:\9700\BKUPTST> CD.. [ENTER]
That entry takes you to the C:\9700> prompt.
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