Online Bash Script Validator

Online Bash Script Validator performs static analysis on Bash scripts to identify syntax errors, portability issues, and common scripting pitfalls without executing the code. It targets developers, system administrators, DevOps engineers, and educators who port or maintain shell scripts and need quick, reliable feedback before runtime. It detects non portable constructs, unquoted variables, and risky expansions, and it highlights exact lines and patterns that cause problems in POSIX shells or Bash with strict settings.
Conceptually, the tool parses the input script into an internal representation, runs a set of domain rules, and produces a structured report. It supports a default POSIX compliance mode and an optional Bash extension check. Results include errors, warnings, and actionable fixes; each item includes line numbers, snippet context, and recommended alternatives.
Who benefits: developers writing portable scripts for diverse environments, sysadmins validating deployment scripts, CI teams enforcing code quality, and instructors teaching shell scripting. Typical use cases include pre-commit validation, CI pipelines, porting legacy scripts to POSIX, and auditing scripts for security and correctness.
Unique value: a focused, rule-based analyzer that emphasizes portability, correctness, and maintainability. Core features include syntax validation, POSIX mode, portability checks, unbound variable detection, quotes and word splitting analysis, and exportable reports in JSON or CSV for integration with other tools.