ConfigGenerator

Bash Script Generator

Generate enterprise-grade Bash scripts with strict mode, error trapping, logging, and argument parsing.

Output:A ready-to-use configuration file for Bash Script with best practices applied.
- Fails on any error, unset variables, and errors in pipes.
- Adds a trap function to catch unexpected exits.
- Verifies that the script is run with sudo/root.
- Prevent concurrent executions using a lock file.
- Keeps global scope clean.
- Provides log_info, log_warn, log_err functions.

Your core bash commands.

script.sh
 Usage Instructions
# 1. Save the file
nano script.sh

# 2. Make the script executable
chmod +x script.sh

# 3. Run the script
./script.sh

# 4. (Optional) Run ShellCheck to verify
shellcheck script.sh
 What is this tool?
Bash is the most widely used shell on Linux systems. However, writing robust, production-ready bash scripts requires strict error handling, environment isolation, and safety checks. This generator enforces enterprise standards like set -euo pipefail and traps.
 Best Practices for Production
  • Always use double quotes: Unquoted variables can cause word splitting and globbing, leading to dangerous bugs.
  • Validate input: Never trust user arguments or environment variables. Provide a fallback or exit if they are missing.
  • Wrap in main(): Putting your logic inside a `main()` function prevents variable leakage into the global scope.
  • Use ShellCheck: Always run your scripts through `shellcheck` before deploying to production.
 Common Mistakes
rm -rf $DIR/: If $DIR is unset, this becomes `rm -rf /`, wiping the entire server. Always quote and check variables, or enable `set -u`.
Bashisms in /bin/sh: If your shebang is `#!/bin/sh`, you cannot use Bash arrays or `[[ ]]`. Always use `#!/usr/bin/env bash` for Bash scripts.
 Frequently Asked Questions
What does set -euo pipefail do?
Also known as 'Bash Strict Mode'. -e exits immediately if a command fails. -u exits if an unset variable is used. -o pipefail catches errors within piped commands (e.g., if a fails in a | b).
Why should I use a trap?
A trap executes a function when the script exits, whether it succeeds, fails, or is interrupted (like with Ctrl+C). It's crucial for cleaning up temporary files or releasing lock files.
Why shouldn't I run curl | bash?
Piping a script directly from the internet to bash means you have no chance to inspect it. If the connection drops halfway, bash will execute a partial, potentially destructive script.
How We Keep Your Configs Safe & Valid
 Built-in Error Checking
Every file is checked against official rules. We catch missing fields and bad syntax. YAML indentation errors are flagged right away. Kubernetes, Terraform, and Docker specs are all covered. API versions and labels are verified too. You get valid output every time you generate.
100% Private & Local
All tools run in your browser only. Your API keys never leave your machine. We do not use any tracking scripts. No data is sent to any server. Passwords and secrets stay on your device. Crypto operations use the Web Crypto API. Your privacy is fully protected at all times.
 Secure Settings by Default
Configs use safe defaults out of the box. Containers run as non-root users. Root filesystems are set to read-only. Dangerous Linux capabilities are dropped. Network policies limit pod-to-pod traffic. TLS 1.3 is enabled for web servers. Security headers are added where needed.
Ready for CI/CD & Git
Output files are ready for your Git repo. Use them with ArgoCD, Flux, or GitHub Actions. Files use clear formatting and comments. Code review is easy for your team. Indentation and key order are consistent. Test in staging before going to production. Every file is clean and well-structured.
 Infrastructure as Code
Store configs in Git alongside your code. Terraform modules include typed variables. Backend configs support remote state locking. Outputs work across multiple modules. Ansible playbooks use clear task steps. Chef and Puppet configs are also supported. Every file works with version control tools.
Monitoring & Tracing
Set up Prometheus with auto-discovery rules. Create Grafana dashboards with template variables. Add alerting rules with severity labels. Use OpenTelemetry for trace collection. Forward logs to Loki or Elasticsearch. Connect to Jaeger or Tempo for tracing. Monitor metrics, logs, and traces together.
Container & Docker Safety
Dockerfiles use multi-stage builds for small images. Base images are pinned to exact versions. Dev files are excluded from final images. Health checks are added for orchestrator use. Containers switch to non-root users. Docker Compose uses named volumes and networks. Resource limits are set in deploy configs.
 Multiple Output Formats
Export as YAML, JSON, HCL, or TOML. Kubernetes uses YAML with proper separators. Terraform uses HCL with correct escaping. JSON output has consistent indentation. Copy to clipboard with one click. Preview output with syntax highlighting. Line numbers help you review quickly.