-Google has a [Shell Style Guide](http://google-styleguide.googlecode.com/svn/trunk/shell.xml). As the name suggests, it primarily focuses on good style, but some items are safety/security-relevant.
+Google has a [Shell Style Guide](https://google.github.io/styleguide/shell.xml). As the name suggests, it primarily focuses on good style, but some items are safety/security-relevant.