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ShellCheck

Supported Version	Language	Website
0.7.0	Shell script	https://www.shellcheck.net

ShellCheck is a static analysis tool for shell scripts. It gives warnings and suggestions.

Getting Started

To start using ShellCheck, enable it in your repository settings.

For more details, see the ShellCheck's CLI manual and Wiki.

Configuration

Here is a configuration example via sider.yml:

linter:
  shellcheck:
    target: "src/**/*.{sh,bash}"
    include: "SC2104,SC2105"
    exclude: "SC1000,SC1118"
    enable: "all"
    shell: "bash"
    severity: "error"
    norc: true

You can use the following options to fine-tune ShellCheck to your project.

Name	Type	Default	Description
root_dir	string	-	A root directory.
target	string, string[], hash[]	(See below)	Files to analyze.
include	string, string[]	-	--include option of ShellCheck.
exclude	string, string[]	-	--exclude option of ShellCheck.
enable	string, string[]	-	--enable option of ShellCheck.
shell	string	-	--shell option of ShellCheck.
severity	string	-	--severity option of ShellCheck.
norc	boolean	false	--norc option of ShellCheck.

target

This option allows you to specify files to analyze via ShellCheck. You can specify multiple targets or glob formats.

The default value is:

linter:
  shellcheck:
    target:
      - "**/*.{bash,bats,dash,ksh,sh}"
      - shebang: true

shebang: true is a special form. if enabling this form, Sider will analyze files including a shebang like #!/bin/sh even if they do not have a file extension like .sh.

For example, if you have a file named hello including the following content, Sider will analyze it.

#!/bin/sh

echo "This script's filename is `hello`."

If you want to disable this shebang behavior, explicitly specify shebang: false as follow:

linter:
  shellcheck:
    target:
      - "**/*.{bash,sh}"
      - shebang: false

include

This option allows you to explicitly include only the specified codes of ShellCheck. This can be a comma-separated list or have multiple values.

For example:

linter:
  shellcheck:
    include: "SC2104,SC2105"

Or

linter:
  shellcheck:
    include:
      - "SC2104"
      - "SC2105"

exclude

This option allows you to explicitly exclude the specified codes of ShellCheck. This can be a comma-separated list or have multiple values like the include option.

enable

This option allows you to enable optional checks. The special name all enables all of them.

For example:

linter:
  shellcheck:
    enable: "all"

You can see a list of all optional checks via shellcheck --list-optional command. Here is an example to enable some optional checks:

linter:
  shellcheck:
    enable:
      - "add-default-case"
      - "avoid-nullary-conditions"

You can use also a comma-separated list:

linter:
  shellcheck:
    enable: "add-default-case,avoid-nullary-conditions"

shell

This option allows you to specify a shell dialect. Valid values are sh, bash, dash, and ksh. If you omit this option, ShellCheck will deduce it automatically.

severity

This option allows you to specify a minimum severity of errors to consider. Valid values in order of severity are error, warning, info, and style. If you omit this option, Sider will use a ShellCheck's default one.

norc

This option allows you not to try to look for ShellCheck's configuration files. For more details about the configuration file, see the ShellCheck's manual.