ShellCheck Install the Latest Version

From WikiMLT

De­ploy the lat­est sta­ble ver­sion of ShellCheck

# Instead of 'stable' you could use "v0.4.7" or "latest", etc.
cd /tmp && \
scversion="stable" && \
wget -qO- "https://github.com/koalaman/shellcheck/releases/download/${scversion?}/shellcheck-${scversion?}.linux.x86_64.tar.xz" | tar -xJv && \
sudo cp "shellcheck-${scversion}/shellcheck" /usr/local/bin/ && \
shellcheck --version

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