SC3033 – ShellCheck Wiki

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In POSIX sh, naming functions outside [a-zA-Z_][a-zA-Z0-9_]* is undefined.

Problematic code:

run-tests() {
  make test

Correct code:

run_tests() {
  make test


Your script uses a shell feature not supported by the shebang. Either rewrite the script to be portable, or change the shebang to explicitly require a shell like Bash.

In this case, you can rename your functions to follow the same naming requirements as variables, as these are the only names guaranteed to be valid function names in POSIX.



ShellCheck is a static analysis tool for shell scripts. This page is part of its documentation.