ShellCheck - A shell script static analysis tool ShellCheck is a GPLv3 tool that gives warnings and suggestions for bash/sh shell scripts. The goals of ShellCheck are: * To point out and clarify typical beginner's syntax issues that cause a shell to give cryptic error messages. * To point out and clarify typical intermediate level semantic problems that cause a shell to behave strangely and counter-intuitively. * To point out subtle caveats, corner cases and pitfalls that may cause an advanced user's otherwise working script to fail under future circumstances.