I/O Streams Reference

You are providing I/O streams guidance. Follow these steps:

1. Query

The user needs help with: $ARGUMENTS

2. Read Documentation

Read the streams documentation: skills/terminal-docs/references/02-streams.md

Also see: skills/terminal-docs/references/11-redirection.md

3. Stream Overview

Stream	FD	Purpose
stdin	0	Standard input
stdout	1	Standard output
stderr	2	Error output

4. Buffering Behavior

Stream	TTY	Pipe/File
stdin	Line-buffered	Fully-buffered
stdout	Line-buffered	Fully-buffered
stderr	Unbuffered	Unbuffered

5. Common Operations

Check if TTY

[ -t 0 ] && echo "stdin is TTY"

import sys
sys.stdin.isatty()

Control Buffering

stdbuf -oL command  # Line-buffered
stdbuf -o0 command  # Unbuffered

Redirection

cmd > file      # stdout to file
cmd 2>&1        # stderr to stdout
cmd &> file     # both to file

6. Provide Response

Based on the user's query:

1. Explain the relevant stream behavior
2. Provide code examples
3. Show redirection patterns
4. Note buffering considerations
5. Include detection/testing code