private String getLibraryPathVariable(String pathKey, String pathValue) {
		Set<String> libraryPaths = new HashSet<>();
		addOSPaths(libraryPaths);

		StringBuffer buffy = new StringBuffer();
		buffy.append(pathKey + "=");
		for (String path : libraryPaths) {
			buffy.append(path).append(File.pathSeparator);
		}

		// add in the old path value
		buffy.append(pathValue);

		return buffy.toString();
	}
Sends a command to the DMG server process.
<p>
ExpectedResults can be positive (ie. N result lines will be read from the
server process),
<li>0 (no result lines will be read),
<li>{@link Cmd#UNKNOWN_RESPONSE_COUNT UNKNOWN_RESPONSE_COUNT} const value
that indicates that the first response from the command will be the
number of following lines,
<li>or negative, meaning that an variable number of responses of size
abs(N) will be read from the server, where the first response from the
command is the variable number. In all, abs(N) * (first_response_int)
will be the total number of result lines returned.

@param cmdStr
@param expectedResults
@return
@throws IOException
Ghidra/Features/FileFormats/src/main/java/ghidra/file/formats/ios/dmg/DmgServerProcessManager.java