I/O Device Guide

• About I/O Devices
• Device Management Utilities
• Default Devices
• Identifying Devices
• Defining Devices
• Accessing Devices
• Defining Default Mnemonic Spaces
• I/O Devices and Commands
• Overview of I/O Commands
• Specifying I/O Devices
• Allowing Users to Specify a Device
• Specifying Devices in I/O Commands
• Processes and Devices
• Application Development I/O Commands
• Device Special Variables
• Controlling Devices with Mnemonic Spaces
• Terminal I/O
• Overview of Terminal I/O Capabilities
• Special Variables Show I/O Conditions
• OPEN and USE Commands
• READ Command
• WRITE Command
• CLOSE Command
• Predefined Mnemonic Spaces for Terminals
• PRINT and ZPRINT Commands
• Programming Your Terminal
• Local Interprocess Communication
• Using Pipes to Communicate with Processes
• Communication Between InterSystems IRIS Processes
• TCP Client/Server Communication
• TCP Connections Overview
• OPEN Command for TCP Devices
• Current TCP Device
• USE Command for TCP Devices
• READ Command for TCP Devices
• WRITE Command for TCP Devices
• Connection Management
• Concatenation of Records
• Multiplexing InterSystems IRIS TCP Devices
• Closing the Connection
• UDP Client/Server Communication
• Establishing a UDP Socket
• The Host Address
• Sequential File I/O
• Using Sequential Files
• Spool Device
• Opening and Using the Spool Device
• Spooling and Special Variables
• Closing the Spool Device
• Viewing the ^SPOOL Global
• Opening the Spooler Using the %IS Utility
• Managing Spooled Documents Using %SPOOL
• Printers
• Overview of Printers
• Specifying a Printer
• Directing Output to a Printer
• Printer as Alternate Device