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Shell script static analysis tool.
Check shell scripts for errors, usage of deprecated/insecure features, and bad practices.
shellcheck {path/to/script.sh}
shellcheck --shell {sh|bash|dash|ksh} {path/to/script.sh}
shellcheck --exclude {SC1009,SC1073} {path/to/script.sh}
shellcheck --checked-sourced {path/to/script.sh}
shellcheck --format {tty|checkstyle|diff|gcc|json|json1|quiet} {path/to/script.sh}
shellcheck --enable={add-default-case|avoid-nullary-conditions}
shellcheck --list-optional
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