The pages on this site contain documentation for very old MS-DOS software,
purely for historical purposes.
If you're looking for up-to-date documentation, particularly for programming,
you should not rely on the information found here, as it will be woefully
out of date.
SYS1805
SYS1805Explanation
The process tried to write to a pipe that could not be created or no longer
exists.
Action
Check that the program you are trying to pipe to exists. Retry the command.