2025-10-20 (3 Lec): Files And File I/O

Processes: Commandline, Exit Status, Environment

• Exit Status, Arguments, Environment

System Calls, Error Handling

• System Calls: Overview

• errno, And Error Handling

Files, And File I/O

From Files And File Descriptors:

• File Descriptors: Basics

• open(): Opening Files

• Input From Files (read())

• Output To Files (write())

• Creating Files