zulip/tools/setup/install-shellcheck

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#!/usr/bin/env bash
set -eu
version=0.6.0
if ! out="$(shellcheck --version 2>/dev/null)" || [[ "$out" != *"
version: $version
"* ]]; then
tmpdir="$(mktemp -d)"
trap 'rm -r "$tmpdir"' EXIT
cd "$tmpdir"
wget -nv "https://storage.googleapis.com/shellcheck/shellcheck-v$version.linux.x86_64.tar.xz"
tar -xJf "shellcheck-v$version.linux.x86_64.tar.xz" --no-same-owner --strip-components=1 -C /usr/local/bin "shellcheck-v$version/shellcheck"
fi