# destructive_command_guard | Jeff Emanuel | Knowledge Base | Instagit

The Destructive Command Guard (dcg) is for blocking dangerous git and shell commands from being executed by agents.

GitHub Stars: 3.8k

Repository: https://github.com/Dicklesworthstone/destructive_command_guard

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## Articles

### [How dcg Handles Windows-Specific Commands and PowerShell Scripts](/Dicklesworthstone/destructive_command_guard/how-does-dcg-handle-windows-specific-commands-and-powershell-scripts)

Discover how Destructive Command Guard enforces safety on Windows. Learn about its handling of PowerShell scripts, Windows commands, and path normalization for secure execution.

- Tags: how-to-guide
- Published: 2026-07-22

### [How the Fallback Scanner Works When Heredoc Parsing Fails in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-does-the-fallback-scanner-work-when-heredoc-parsing-fails)

Learn how the fallback scanner secures your commands by masking heredocs when parsing fails in destructive_command_guard, guaranteeing zero false negatives without over-masking.

- Tags: internals
- Published: 2026-07-22

### [How to Debug Why a Command Is Being Incorrectly Blocked or Allowed in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-do-i-debug-why-a-command-is-being-incorrectly-blocked-or-allowed)

Debug incorrect command blocks or allows in Destructive Command Guard with the dcg explain command. Get a detailed decision trace to pinpoint blocking triggers.

- Tags: how-to-guide
- Published: 2026-07-22

### [How the Normalize Module Strips Paths from Git and RM Binaries in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-does-the-normalize-module-strip-paths-from-git-rm-binaries)

Discover how the normalize module strips paths from git and rm binaries at Destructive Command Guard. Learn how regex patterns ensure accurate destructive command matching.

- Tags: deep-dive
- Published: 2026-07-22

### [How to Integrate dcg with MCP Servers: Using the Built-In Model Context Protocol](/Dicklesworthstone/destructive_command_guard/how-do-i-integrate-dcg-with-mcp-model-context-protocol-servers)

Learn to integrate dcg with MCP servers easily. Run the dcg mcp-server sub-command to expose essential tools via stdio using rust-mcp-sdk. Streamline your workflow today.

- Tags: how-to-guide
- Published: 2026-07-22

### [How Destructive Command Guard Prevents Malicious Repository Configs from Weakening Protection](/Dicklesworthstone/destructive_command_guard/what-security-measures-prevent-malicious-repository-configs-from-weakening-protection)

Discover how Destructive Command Guard's layered trust model prevents malicious repository configs from weakening protection with strict size limits, symlink validation, and policy restrictions.

- Tags: how-to-guide
- Published: 2026-07-22

### [How AST-Based Pattern Matching Works for Embedded Scripts in Heredocs](/Dicklesworthstone/destructive_command_guard/how-does-the-ast-based-pattern-matching-work-for-embedded-scripts-in-heredocs)

Learn how AST-based pattern matching in destructive_command_guard uses ast-grep to parse heredoc scripts, distinguishing code from literals for accurate destructive command detection.

- Tags: deep-dive
- Published: 2026-07-22

### [Performance Budget for Hook Evaluation and Deadline Exhaustion in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/what-is-the-performance-budget-for-hook-evaluation-and-how-does-deadline-exhaustion-work)

Discover the 200ms performance budget for hook evaluation in Destructive Command Guard. Learn how deadline exhaustion prevents unsafe commands from executing silently.

- Tags: performance
- Published: 2026-07-22

### [How dcg Detects and Handles Different AI Agent Protocols: Claude, Codex, Gemini, and More](/Dicklesworthstone/destructive_command_guard/how-does-dcg-detect-and-handle-different-ai-agent-protocols-claude-codex-gemini-etc)

Discover how dcg detects and handles AI agent protocols like Claude, Codex, and Gemini. Learn how this PreToolUse hook inspects JSON, env vars, and provides specific denial responses.

- Tags: internals
- Published: 2026-07-22

### [How the DCG Allow-Once Short Code System Works: Security and Implementation](/Dicklesworthstone/destructive_command_guard/how-does-the-allow-once-short-code-system-work-and-how-is-it-secured)

Discover how the allow-once short code system from Dicklesworthstone/destructive_command_guard secures command execution with temporary permits and SHA-256 hashes, preventing replay attacks.

- Tags: internals
- Published: 2026-07-22

### [How to Create Custom Security Packs Using YAML Files in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-do-i-create-custom-security-packs-using-yaml-files)

Learn to create custom security packs in Destructive Command Guard using YAML files. Extend DCG functionality easily without recompilation.

- Tags: how-to-guide
- Published: 2026-07-22

### [How the Bounded Failure Policy Handles Timeouts and Parse Errors in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-does-the-bounded-failure-policy-handle-timeouts-and-parse-errors)

Learn how the bounded failure policy in Destructive Command Guard handles timeouts and parse errors. It ensures safe command execution by aborting analysis and emitting deterministic rule IDs for confident verification.

- Tags: deep-dive
- Published: 2026-07-22

### [Agent Trust Levels in Destructive Command Guard: How They Affect Rule Evaluation](/Dicklesworthstone/destructive_command_guard/what-is-the-difference-between-agent-trust-levels-and-how-do-they-affect-rule-evaluation)

Understand agent trust levels in Destructive Command Guard and how they influence rule evaluation. Learn about permissive whitelisting, standard validation, and cautious filtering.

- Tags: deep-dive
- Published: 2026-07-22

### [How dcg Resolves Conflicts Between Multiple Configuration Files: Layered Priority Explained](/Dicklesworthstone/destructive_command_guard/how-does-dcgs-layered-configuration-system-resolve-conflicts-between-multiple-config-files)

Learn how dcg resolves config conflicts with its layered priority system. Discover how environment variables override system, user, and explicit config files for ultimate control.

- Tags: internals
- Published: 2026-07-22

### [How dcg's Three-Tier Heredoc Scanning Architecture Detects Destructive Commands](/Dicklesworthstone/destructive_command_guard/how-does-dcgs-three-tier-heredoc-scanning-architecture-work-internally)

Discover how dcg's three-tier heredoc scanning architecture rapidly detects destructive commands using zero-allocation regex, content extraction, and AST analysis for sub-millisecond latency.

- Tags: internals
- Published: 2026-07-22

### [How dcg Scan Mode Works in Pre-Commit Hooks and CI Integration](/Dicklesworthstone/destructive_command_guard/dcg-scan-mode-pre-commit-hooks-ci-integration)

Learn how dcg scan mode statically analyzes staged files and diffs for destructive commands, blocking risky commits with pre-commit hooks and CI integration.

- Tags: how-to-guide
- Published: 2026-07-21

### [How Command Normalization in dcg Removes Absolute Paths from git and rm Binaries](/Dicklesworthstone/destructive_command_guard/dcg-command-normalization-strip-absolute-paths)

Discover how command normalization in dcg removes absolute paths from git and rm binaries. Learn its technique for secure command execution and parsing in Rust.

- Tags: internals
- Published: 2026-07-21

### [How to Configure Agent-Specific Profiles for Different AI Coding Agents in dcg](/Dicklesworthstone/destructive_command_guard/dcg-configure-agent-specific-profiles)

Learn how to configure agent-specific profiles for AI coding agents in dcg using TOML files and environment variables. Customize your AI assistant's behavior easily.

- Tags: how-to-guide
- Published: 2026-07-21

### [How dcg Performs Heredoc and Inline Script Extraction Using AST Scanning](/Dicklesworthstone/destructive_command_guard/dcg-heredoc-inline-script-extraction-ast-scanning)

Learn how dcg uses AST scanning to extract heredoc and inline scripts, employing regex, content extraction, and ast-grep for safe shell command execution.

- Tags: internals
- Published: 2026-07-21

### [How Self-Heal Hook Registration Restores Claude Code Settings After Overwrites](/Dicklesworthstone/destructive_command_guard/how-does-the-self-heal-hook-registration-work-to-recover-from-claude-code-overwriting-settings)

Learn how Destructive Command Guard's self-heal hook registration automatically restores Claude Code settings after overwrites. Protect your configurations effortlessly.

- Tags: internals
- Published: 2026-07-16

### [How to Debug Why a Command Is Being Blocked or Allowed by dcg](/Dicklesworthstone/destructive_command_guard/how-to-debug-why-a-command-is-being-blocked-or-allowed-by-dcg)

Debug why a command is blocked or allowed by destructive command guard dcg. Use dcg explain to see rule IDs and trace the evaluation pipeline step-by-step.

- Tags: how-to-guide
- Published: 2026-07-16

### [How to Use DCG Scan Mode with Pre‑Commit Hooks in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/what-is-dcg-scan-mode-and-how-to-integrate-it-with-pre-commit-hooks)

Learn how to use DCG scan mode with pre-commit hooks to detect destructive commands before they enter your commit history. Block catastrophic operations safely. Integrate Destructive Command Guard today.

- Tags: how-to-guide
- Published: 2026-07-16

### [How dcg Handles Windows-Specific Destructive Commands: Architecture and Implementation](/Dicklesworthstone/destructive_command_guard/how-does-dcg-handle-windows-specific-destructive-commands)

Learn how dcg handles destructive Windows commands using regex, Aho-Corasick matching, and contextual suggestions to block dangerous cmd.exe and PowerShell operations before execution.

- Tags: architecture
- Published: 2026-07-16

### [How the Allowlist System Works with Layered Project, User, and System Scopes in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-does-the-allowlist-system-work-with-layered-project-user-and-system-scopes)

Understand the Destructive Command Guard allowlist system's layered project, user, and system scopes. Learn how configurations override each other using rule IDs, commands, prefixes, and regex with strict safety.

- Tags: internals
- Published: 2026-07-16

### [How to Write Pack Tests and Validate Custom Packs for dcg](/Dicklesworthstone/destructive_command_guard/how-to-write-pack-tests-and-validate-custom-packs-for-dcg)

Learn to write pack tests and validate custom packs for Dicklesworthstone/destructive_command_guard. Implement tests for creation, patterns, and performance. Run cargo test to validate your custom packs.

- Tags: how-to-guide
- Published: 2026-07-16

### [Performance Budgets in dcg: How the 200ms Timeout Enforces Low Latency](/Dicklesworthstone/destructive_command_guard/what-are-performance-budgets-and-how-does-dcg-enforce-the-200ms-timeout)

Learn about performance budgets and how Dicklesworthstone dcg enforces a 200ms timeout. Discover how this ensures low latency in command validation.

- Tags: performance
- Published: 2026-07-16

### [How Command Normalization Strips Absolute Paths from git and rm Binaries in dcg](/Dicklesworthstone/destructive_command_guard/how-does-command-normalization-strip-absolute-paths-from-git-rm-binaries-in-dcg)

Learn how Destructive Command Guard normalizes commands by stripping absolute paths from git and rm binaries, preventing evasion and enhancing security.

- Tags: internals
- Published: 2026-07-16

### [Difference Between Safe Patterns and Destructive Patterns in DCG Evaluation Order](/Dicklesworthstone/destructive_command_guard/difference-between-safe-patterns-and-destructive-patterns-in-dcg-evaluation-order)

Understand the difference between safe and destructive patterns in DCG evaluation order. Learn how safe patterns whitelist and destructive patterns blacklist commands for robust command guarding.

- Tags: deep-dive
- Published: 2026-07-16

### [How to Set Up Project-Specific Pack Configurations in dcg](/Dicklesworthstone/destructive_command_guard/how-to-set-up-project-specific-pack-configurations-in-dcg)

Learn to set up project specific pack configurations in dcg by creating a .dcg.toml file. Enable disable custom paths for destructive command guards in your repository.

- Tags: how-to-guide
- Published: 2026-07-16

### [How dcg Handles Heredoc Extraction with AST-Based Pattern Matching: A Three-Tier Pipeline](/Dicklesworthstone/destructive_command_guard/how-does-dcg-handle-heredoc-extraction-with-ast-based-pattern-matching)

Discover how dcg uses AST pattern matching and a three-tier pipeline to efficiently extract and analyze heredocs and inline scripts with sub-millisecond latency.

- Tags: internals
- Published: 2026-07-16

### [MCP Server Integration in dcg: How to Run Destructive Command Guard as an MCP Server](/Dicklesworthstone/destructive_command_guard/what-is-the-mcp-server-integration-and-how-can-i-use-it-with-dcg)

Integrate Destructive Command Guard as an MCP server using STDIO RPC. Query command safety engine with check_command, scan_file, and explain_pattern tools for AI agents. Reduce CLI overhead.

- Tags: how-to-guide
- Published: 2026-07-16

### [How to Configure Agent-Specific Profiles with Different Trust Levels in dcg](/Dicklesworthstone/destructive_command_guard/how-to-configure-agent-specific-profiles-with-different-trust-levels-in-dcg)

Learn to configure agent-specific profiles with different trust levels in dcg. Customize command filtering per AI agent using TOML configuration tables and trust level settings.

- Tags: how-to-guide
- Published: 2026-07-16

### [How DCG History and Telemetry Tracking Works in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-does-dcgs-history-and-telemetry-tracking-function)

Learn how DCG history and telemetry tracking works. Destructive Command Guard logs commands to SQLite asynchronously, ensuring pipeline efficiency and detailed record-keeping.

- Tags: internals
- Published: 2026-07-16

### [How to Integrate DCG with Codex CLI Using the Hook Protocol](/Dicklesworthstone/destructive_command_guard/how-to-integrate-dcg-with-codex-cli-using-the-hook-protocol)

Integrate DCG with Codex CLI using the hook protocol to block destructive Bash commands. Learn how to register DCG as a PreToolUse hook and secure your workflow.

- Tags: how-to-guide
- Published: 2026-07-16

### [dcg Fail-Open Philosophy and When to Enable Fail-Closed Mode](/Dicklesworthstone/destructive_command_guard/what-is-the-fail-open-philosophy-and-when-to-enable-fail-closed-mode-in-dcg)

Understand the dcg fail-open philosophy and learn when to enable fail-closed mode. This guide helps you balance command execution with safety checks.

- Tags: deep-dive
- Published: 2026-07-16

### [How dcg Handles Different AI Agent Protocols: Claude, Codex, and Gemini](/Dicklesworthstone/destructive_command_guard/how-does-dcg-handle-different-ai-agent-protocols-like-claude-codex-gemini)

Learn how dcg inspects AI agent protocols like Claude, Codex, and Gemini. It detects specific agents and returns protocol-shaped denials for accurate interpretation.

- Tags: how-to-guide
- Published: 2026-07-16

### [How Destructive Command Guard's Layered Configuration System Prioritizes Environment Variables vs Config Files](/Dicklesworthstone/destructive_command_guard/how-does-the-layered-configuration-system-prioritize-environment-variables-vs-config-files)

Learn how Destructive Command Guard's layered configuration prioritizes DCG_ environment variables over config files and discover the cascade from project users to system defaults.

- Tags: internals
- Published: 2026-07-16

### [How to Create Custom Security Packs with YAML Definitions in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-to-create-custom-security-packs-with-yaml-definitions)

Learn to create custom security packs in Destructive Command Guard using YAML definitions. Define shell command rules without recompiling the binary for tailored security policies.

- Tags: how-to-guide
- Published: 2026-07-16

### [How the Quick Rejection Filter Achieves Sub‑Millisecond Performance in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-does-the-quick-rejection-filter-achieve-sub-millisecond-performance)

Discover how the quick rejection filter in Destructive Command Guard achieves sub-millisecond performance using SIMD search span aware matching and selective scanning for rapid command evaluation.

- Tags: performance
- Published: 2026-07-16

### [How dcg's Three-Tier Heredoc Scanning Architecture Works](/Dicklesworthstone/destructive_command_guard/how-does-dcgs-three-tier-heredoc-scanning-architecture-work)

Discover how dcg's three-tier heredoc scanning architecture achieves sub-millisecond latency for destructive command detection through zero-allocation regex, bounded-memory parsing, and AST pattern matching.

- Tags: internals
- Published: 2026-07-16

### [How MCP Server Integration in dcg Enables Multi-Agent Coordination](/Dicklesworthstone/destructive_command_guard/how-mcp-server-integration-works-in-dcg-for-multi-agent-coordination)

Discover how MCP server integration in dcg enables multi-agent coordination. Learn how dcg routes requests, aggregates agent decisions, and creates a unified policy response.

- Tags: how-to-guide
- Published: 2026-07-14

### [How the History and Telemetry Database Works in Destructive Command Guard (dcg)](/Dicklesworthstone/destructive_command_guard/how-history-telemetry-database-works-in-dcg)

Explore how Destructive Command Guard's history and telemetry database works. Learn about sub-millisecond latency, full-text search, and analytics with this SQLite solution.

- Tags: internals
- Published: 2026-07-14

### [How to Troubleshoot DCG Hook Failures and Parse Errors in Destructive Command Guard](/Dicklesworthstone/destructive_command_guard/how-to-troubleshoot-dcg-hook-failures-and-parse-errors)

Troubleshoot DCG hook failures and parse errors effectively. Learn to diagnose runtime exits and malformed JSON with RUST_LOG=debug and --debug-session flags.

- Tags: how-to-guide
- Published: 2026-07-14

### [How the Pack Enable/Disable System Works with Category Expansion in dcg](/Dicklesworthstone/destructive_command_guard/how-pack-enable-disable-system-works-with-category-expansion-in-dcg)

Learn how dcg's pack enable/disable system uses category expansion for granular control. Disable parent categories to disable descendants while keeping core packs enabled.

- Tags: internals
- Published: 2026-07-14

### [How to Integrate dcg with VS Code Copilot Chat and Cursor IDE](/Dicklesworthstone/destructive_command_guard/how-to-integrate-dcg-with-vs-code-copilot-chat-cursor-ide)

Integrate dcg with VS Code Copilot Chat and Cursor IDE. Install the binary and configure the JSON hook to route PreToolUse payloads, blocking destructive commands and ensuring safe operations.

- Tags: how-to-guide
- Published: 2026-07-14

### [Difference Between fancy-regex and regex Crates in Destructive Command Guard (dcg)](/Dicklesworthstone/destructive_command_guard/difference-between-fancy-regex-regex-crates-in-dcg)

Discover the difference between the "regex" and "fancy-regex" crates in Destructive Command Guard. Learn how "regex" handles speed and "fancy-regex" manages complex patterns like look-aheads and back-references.

- Tags: deep-dive
- Published: 2026-07-14

### [How to Interpret `dcg explain` Output and Understand Rule Matching](/Dicklesworthstone/destructive_command_guard/how-to-interpret-dcg-explain-output-and-understand-rule-matching)

Learn to interpret dcg explain output & understand rule matching. Traces command evaluation from filters to pattern matching, showing why commands are allowed or denied.

- Tags: how-to-guide
- Published: 2026-07-14

### [How the Pending Exception Store Manages 24-Hour Allow-Once Codes in DCG](/Dicklesworthstone/destructive_command_guard/how-pending-exception-store-manages-24-hour-allow-once-codes-in-dcg)

Learn how the pending exception store in DCG manages 24-hour allow-once codes. It automatically prunes expired entries, ensuring codes invalidate daily without external schedulers.

- Tags: internals
- Published: 2026-07-14

### [Environment Variables That Control dcg Runtime Behavior: Complete Reference](/Dicklesworthstone/destructive_command_guard/what-environment-variables-control-dcg-runtime-behavior)

Discover over 30 DCG environment variables that control runtime behavior like policy modes output formatting and git-aware protections without recompiling. Comprehensive reference for Destructive Command Guard.

- Tags: api-reference
- Published: 2026-07-14

### [How dcg Detects and Handles Different AI Agents at Runtime: A Complete Technical Guide](/Dicklesworthstone/destructive_command_guard/how-dcg-detect-handle-different-ai-agents-at-runtime)

Learn how dcg detects and handles AI agents at runtime using CLI flags, environment variables, and parent process inspection for tailored policy restrictions. Technical guide.

- Tags: deep-dive
- Published: 2026-07-14

### [How dcg's SARIF Output Works for CI Integration](/Dicklesworthstone/destructive_command_guard/how-dcg-sarif-output-works-for-ci-integration)

Integrate dcg's SARIF output into your CI pipelines for automated security reporting. Learn how dcg converts scan findings into structured JSON for GitHub Actions, GitLab CI, and Azure DevOps.

- Tags: deep-dive
- Published: 2026-07-14

### [How to Enable and Configure Windows-Specific Security Packs in dcg](/Dicklesworthstone/destructive_command_guard/how-to-enable-configure-windows-specific-security-packs-in-dcg)

Learn to enable and configure Windows-specific security packs in dcg. Discover automatic, manual, and CLI methods to enhance your system security effectively.

- Tags: how-to-guide
- Published: 2026-07-14

### [How Heredoc and Inline Script Extraction with AST Matching Works in dcg](/Dicklesworthstone/destructive_command_guard/how-heredoc-inline-script-extraction-ast-matching-work-in-dcg)

Discover how Destructive Command Guard (dcg) uses AST matching to extract heredocs and inline scripts for dangerous commands efficiently. Analyze scripts with sub-millisecond latency.

- Tags: internals
- Published: 2026-07-14

### [How dcg's Layered Configuration System Prioritizes Settings: A Technical Deep Dive](/Dicklesworthstone/destructive_command_guard/how-dcg-layered-configuration-system-prioritize-settings)

Learn how dcg's layered configuration system prioritizes settings. Discover how environment variables override project user and system settings while respecting defaults.

- Tags: deep-dive
- Published: 2026-07-14

### [How to Configure Project-Specific Pack Configurations in dcg](/Dicklesworthstone/destructive_command_guard/how-to-configure-project-specific-pack-configurations-in-dcg)

Configure project-specific pack settings for Dicklesworthstone/destructive_command_guard by creating a .dcg.toml file in your repo root. Control enabled disabled and custom paths for destructive command guards with ease.

- Tags: how-to-guide
- Published: 2026-07-14

### [How dcg's Quick Rejection Filter Achieves Sub-Millisecond Performance](/Dicklesworthstone/destructive_command_guard/how-dcg-quick-rejection-filter-achieves-sub-millisecond-performance)

Discover how dcg's quick rejection filter achieves sub-millisecond performance by using SIMD-accelerated substring search. Eliminate 99% of commands before regex compilation for lightning fast execution.

- Tags: performance
- Published: 2026-07-14

### [How to Create Custom YAML Security Packs in dcg: A Complete Guide](/Dicklesworthstone/destructive_command_guard/how-to-create-custom-yaml-security-packs-in-dcg)

Learn to create custom YAML security packs in dcg from Dicklesworthstone/destructive_command_guard. Define command whitelists and blacklists to extend protective rules.

- Tags: how-to-guide
- Published: 2026-07-14

### [Understanding dcg's Fail-Open Philosophy and When to Use Fail-Closed Mode](/Dicklesworthstone/destructive_command_guard/what-is-dcg-fail-open-philosophy-and-when-to-use-fail-closed-mode)

Learn about the dcg fail-open philosophy and when to choose fail-closed mode. Understand how Destructive Command Guard protects your systems in various security scenarios, preventing unintended command execution on error.

- Tags: deep-dive
- Published: 2026-07-14

### [How to Configure Agent-Specific Profiles for Different AI Coding Agents in dcg](/Dicklesworthstone/destructive_command_guard/how-to-configure-agent-specific-profiles-for-ai-coding-agents-in-dcg)

Learn to configure agent-specific profiles for different AI coding agents in dcg using TOML files and policy settings for tailored security and behavior. Enhance your workflow today.

- Tags: how-to-guide
- Published: 2026-07-14

### [How the Three-Tier Heredoc Scanning Architecture Works in dcg](/Dicklesworthstone/destructive_command_guard/how-does-three-tier-heredoc-scanning-architecture-work-in-dcg)

Learn how dcg's three-tier heredoc scanning architecture uses regex, extraction, and AST matching to detect destructive scripts with sub-millisecond latency.

- Tags: architecture
- Published: 2026-07-14

### [How Windows-Specific DCG Packs Differ from Unix Pack Implementations](/Dicklesworthstone/destructive_command_guard/windows-specific-dcg-packs-vs-unix-implementations)

Discover how Windows dcg packs adapt Destructive Command Guard for cmd.exe and PowerShell, differing from Unix pack implementations targeting case-sensitive Linux and macOS utilities.

- Tags: deep-dive
- Published: 2026-07-13

### [How dcg Handles Recursive Shell Analysis for `bash -c` and Inline Code Invocations](/Dicklesworthstone/destructive_command_guard/handle-recursive-shell-analysis-bash-c)

Learn how dcg recursively analyzes shell code for bash -c and inline invocations, scanning inner payloads against destructive patterns for robust security.

- Tags: internals
- Published: 2026-07-13

### [Understanding the Symlink Security Check in DCG's System Configuration Loading](/Dicklesworthstone/destructive_command_guard/symlink-security-check-system-config-loading)

Learn how the DCG symlink security check prevents privilege escalation by verifying system configuration files aren't user writable symlinks before loading.

- Tags: deep-dive
- Published: 2026-07-13

### [How the AST Matcher in dcg Uses Tree-Sitter to Detect Dangerous Operations in Embedded Scripts](/Dicklesworthstone/destructive_command_guard/ast-matcher-treesitter-detect-dangerous-operations-embedded-scripts)

Discover how dcg's AST matcher leverages Tree-Sitter to parse scripts, identify dangerous exec and filesystem sinks, and analyze literal payloads for enhanced security.

- Tags: internals
- Published: 2026-07-13

### [Maximum Processing Timeout and 200ms Deadline in dcg: How Destructive Command Guard Enforces Hard Limits](/Dicklesworthstone/destructive_command_guard/maximum-processing-timeout-200ms-deadline)

Understand the Destructive Command Guard's 200ms deadline and maximum processing timeout. Learn how dcg prevents workflow blocking by enforcing hard limits on command evaluation.

- Tags: internals
- Published: 2026-07-13

### [How to Add Organization-Specific Command Patterns to dcg's Quick Rejection Filter](/Dicklesworthstone/destructive_command_guard/add-organization-specific-command-patterns-quick-rejection-filter)

Learn how to add custom organization-specific command patterns to dcg's quick rejection filter. Extend dcg by creating internal packs or loading external YAML packs to enhance your rejection rules.

- Tags: how-to-guide
- Published: 2026-07-13

### [How DCG_BYPASS and DCGFAILCLOSED Override DCG Config Settings](/Dicklesworthstone/destructive_command_guard/environment-variables-override-dcg-config-settings)

Learn how DCG_BYPASS and DCGFAILCLOSED environment variables override destructive_command_guard TOML settings. Understand their impact on command execution and error handling.

- Tags: how-to-guide
- Published: 2026-07-13

### [How dcg Command Normalization Strips Absolute Paths from git and rm Binaries](/Dicklesworthstone/destructive_command_guard/command-normalization-strip-absolute-paths-git-rm)

Learn how dcg command normalization strips absolute paths from git and rm binaries. Discover the Rust method used for secure command execution by parsing and extracting filenames.

- Tags: internals
- Published: 2026-07-13

### [Allow-Once Short Code Bypass vs Permanent Allowlist Entries in DCG: A Technical Comparison](/Dicklesworthstone/destructive_command_guard/difference-allow-once-short-code-bypass-permanent-allowlist)

Compare DCG's allow-once short code bypass and permanent allowlist entries. Understand temporary vs. durable exemptions for your destructive command guard.

- Tags: deep-dive
- Published: 2026-07-13

### [Performance Impact of Enabling Heredoc Scanning for Inline Scripts in dcg](/Dicklesworthstone/destructive_command_guard/performance-impact-enabling-heredoc-scanning-inline-scripts)

Discover the performance impact of enabling heredoc scanning for inline scripts in dcg. Learn about negligible latency, zero overhead, and sub-5ms processing for complex scripts without workflow stalls.

- Tags: performance
- Published: 2026-07-13

### [How to Create a Custom YAML Pack for dcg with Organization-Specific Security Rules](/Dicklesworthstone/destructive_command_guard/create-custom-yaml-pack-organization-specific-security-rules)

Learn to create a custom YAML pack for dcg with organization-specific security rules. Define regex patterns, validate your pack, and integrate policies without modifying the binary.

- Tags: how-to-guide
- Published: 2026-07-13