[Tool Name] Mastery Reference

Progressive reference for [tool] — from survival commands to advanced patterns.

Survival Kit (Top 10)

# Command

1

[most essential command]

2

[second most essential]

3

[third]

Basics

[Core Operation 1]

# Pattern with explanation
[tool] '[basic pattern]' file.txt

[Core Operation 2]

# Pattern

Field Processing

# Extract specific fields
[tool] -F'[delimiter]' '{print $1, $3}' file.txt
Real-world example: Parse log files
# Extract timestamps and error messages from syslog
[tool] '/ERROR/ {print $1, $2, $3, substr($0, index($0,$6))}' /var/log/syslog

Pattern Matching

Simple patterns

# Match lines containing pattern

Regex patterns

# Extended regex

Range patterns

# From pattern A to pattern B

Data Transformation

Substitution

# Replace pattern

Reformatting

# Restructure output

Aggregation & Counting

# Count occurrences
# Sum values
# Unique values

Multi-file Operations

# Process multiple files

Combining with Other Tools

[tool] + grep

# Pipeline pattern

[tool] + sort + uniq

# Pipeline pattern

[tool] + xargs

# Pipeline pattern

Infrastructure Patterns

Log analysis

# Parse ISE logs / syslog / auth.log

Network data

# Parse IP tables, ARP, routing

Certificate inspection

# Parse openssl output

Gotchas & Traps

Trap Explanation

[Common mistake 1]

[Why it fails and what to do instead]

[Common mistake 2]

[Why it fails and what to do instead]

Cheat Sheet

Category Pattern Description

Basics

[pattern]

[What it does]

Intermediate

[pattern]

[What it does]

Advanced

[pattern]

[What it does]

Drill Exercises

Drill 1: [Task description] 
# Solution
Drill 2: [Task description] 
# Solution
Drill 3: [Task description] 
# Solution