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42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# shellcheck
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> Statically check shell scripts for errors, usage of deprecated/insecure features, and bad practices.
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> More information: <https://github.com/koalaman/shellcheck/wiki>.
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- Check a shell script:
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`shellcheck {{path/to/script.sh}}`
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- Check a shell script interpreting it as the specified shell dialect (overrides the shebang at the top of the script):
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`shellcheck {{[-s|--shell]}} {{sh|bash|dash|ksh}} {{path/to/script.sh}}`
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- Ignore one or more error types:
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`shellcheck {{[-e|--exclude]}} {{SC1009,SC1073,...}} {{path/to/script.sh}}`
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- Also check any sourced shell scripts:
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`shellcheck {{[-a|--check-sourced]}} {{path/to/script.sh}}`
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- Display output in the specified format (defaults to `tty`):
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`shellcheck {{[-f|--format]}} {{tty|checkstyle|diff|gcc|json|json1|quiet}} {{path/to/script.sh}}`
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- Enable one or more [o]ptional checks:
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`shellcheck {{[-o|--enable]}} {{add-default-case,avoid-nullary-conditions,...}} {{path/to/script.sh}}`
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- List all available optional checks that are disabled by default:
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`shellcheck --list-optional`
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- Adjust the level of severity to consider (defaults to `style`):
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`shellcheck {{[-S|--severity]}} {{error|warning|info|style}} {{path/to/script.sh}}`
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