I/O Device Guide

• Introduction to I/O
• Introduction
• Overview of I/O Commands
• OPEN Command
• USE Command
• READ Command
• WRITE Command
• CLOSE Command
• Principal Device, Current Device, and Null Device
• One Process Owns a Device
• Each Process has a Principal Device
• InterSystems IRIS Directs I/O Commands to the Current Device
• When Your Principal Device Becomes Your Current Device
• Explicitly Using the Principal Device
• Options for Working with the Principal Device
• The Null Device
• Specifying Devices in I/O Commands
• Specifying Terminals and Printers by Device Name
• Specifying Devices by InterSystems IRIS ID
• Specifying Files on Disk
• Local Interprocess Communication (Pipes)
• Introduction
• Opening Pipes to InterSystems IRIS Utilities
• Pipes and Command Pipes
• OPEN Command for Interprocess Communication
• READ Command for Interprocess Communication
• CPIPE Exit Codes
• CLOSE Command for Interprocess Communication
• Using Named Pipes to Communicate with Visual Basic
• See Also
• Communication Between InterSystems IRIS Processes
• Introduction
• Specifying Memory Buffers for Interjob Communication Devices
• Interjob Communication Device Numbers
• I/O Commands for IJC Devices
• See Also
• TCP Client/Server Communication
• Introduction
• OPEN Command for TCP Devices
• Current TCP Device
• USE Command for TCP Devices
• READ Command for TCP Devices
• WRITE Command for TCP Devices
• Closing the Connection
• See Also
• TCP Advanced Topics
• Connection Management
• Concatenation of Records
• Multiplexing InterSystems IRIS TCP Devices
• See Also
• UDP Client/Server Communication
• Introduction
• Establishing a UDP Socket
• The Host Address
• IPv4 and IPv6
• See Also
• Terminal I/O
• Overview
• 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
• File I/O
• Introduction
• Specifying a File
• OPEN Command
• USE Command
• READ Command
• WRITE Command
• CLOSE Command
• Spool Device
• Introduction
• 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
• Controlling Devices with Mnemonic Spaces
• Predefined Mnemonic Spaces
• Setting Up Default Mnemonic Spaces
• Creating a Mnemonic Space
• Select a Mnemonic Space
• Managing Devices and Mnemonic Spaces
• Device Management Utilities
• Default Devices
• Identifying Devices
• Defining Devices
• Accessing Devices
• Defining Default Mnemonic Spaces
• Using ^%IS
• How ^%IS Works
• ^%IS Mnemonics
• Structure of ^%IS Global
• Device Special Variables