4 SC1065

Joachim Ansorg edited this page 2024-07-05 10:56:03 +02:00

Table of Contents

• Trying to declare parameters? Don't. Use () and refer to params as $1, $2, …
• Problematic code:
• Correct code:
• Rationale:
• Exceptions:

Trying to declare parameters? Don't. Use () and refer to params as $1, $2, …

Problematic code:

foo(input) {
  echo "$input"
}
foo("hello world");

Correct code:

foo() {
  echo "$1"
}
foo "hello world"

Rationale:

Shell script functions behave just like scripts and other commands:

• They always take a 0 to N parameters, referred to with $1, $2 etc. They can not declare parameters by name.
• They are executed using name arg1 arg2, and not with parentheses as C-like languages.

Exceptions:

None.

ShellCheck

• Installation

  • CentOS6
  • More Installation Guides

• Usage

  • Directive
  • Ignore

• Integrating and extending

  • Misc. contributions
  • Azure Pipelines
  • Buildkite
  • CircleCI
  • DevGuide
  • Integration
  • JUnit
  • Phabricator
  • TravisCI
  • GitLab CI
  • Drone
  • GitHub Actions

• Severity

• Template

Each individual ShellCheck warning has its own wiki page like SC1000. Use GitHub Wiki's "Pages" feature above to find a specific one, or see Checks.