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README.md: pipe wget | tar to reduce duplication

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cclauss 2019-02-18 09:36:36 +01:00 • committed by GitHub
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@ -191,8 +191,7 @@ To install it on Redhat/Fedora/CentOS, run `yum -y install xz`.
```bash
export scversion="stable" # or "v0.4.7", or "latest"
wget "https://storage.googleapis.com/shellcheck/shellcheck-${scversion}.linux.x86_64.tar.xz"
tar --xz -xvf shellcheck-"${scversion}".linux.x86_64.tar.xz
wget -qO- "https://storage.googleapis.com/shellcheck/shellcheck-stable.linux.x86_64.tar.xz" | tar -xJv
cp shellcheck-"${scversion}"/shellcheck /usr/bin/
shellcheck --version
```