Multiple-Option Blocks - Falcon DOS Portable Data Terminals Advanced User's Manual

Dos portable data terminals

page of 184

/ 184
Contents
Table of Contents
Bookmarks

Table of Contents

Up to ten slashes or hyphens can be used for options in the environment variable.

Refer to section,

Any of the parameters used in the example could be overwritten on the

command line. For example, with following command:

C:\> xfer /x foo

XFER would use Xmodem for the file transfer instead of Zmodem, while still

using the other option settings specified in the

There are two precautions for mixing options in the environment variable with

options on the command line. The first is about options that are supported by

Zmodem protocol only. In the following example:

C:\> set XFER_ARGS = /z /w4096 /c3

C:\> xfer /x foo

the environment variable is set up to use Zmodem with a 4K window and crash

recovery turned on. In the XFER command line, Xmodem protocol is

specified. Since Xmodem doesn't support windows or crash recovery, both

those options are ignored. Another, more troublesome scenario is the following:

C:\> set XFER_ARGS = /z /o5

C:\> xfer /x foo

Here, XFER is set to Zmodem in the environment variable, with an overwrite

setting of 5 (overwrite if source is newer). However, in the XFER command

line, Xmodem protocol is specified. The only overwrite settings that Xmodem

supports are O4 (always overwrite) and O7 (never overwrite); all other O

options resolve to O7 for Xmodem. If the file foo exists, the transfer will

abort. In this case, specify O4 on the command line or do not use the X option.

If a filename is included in the

always be the first file sent or received. Negate it only by specifying the

the command line (refer to

when including filenames in the environment variable.