Are these examples supported anymore?

[esobczak1970]

In Start.sh
[Line 52:](javascript:setPosition(52, 35))
if [ -n "$BASEAPP_SERVER_SSLCERT" && -n "$BASEAPP_SERVER_SSLKEY" ]; then
^-- SC2107 (error): Instead of [ a && b ], use [ a ] && [ b ].

This will fix one of the errors in the shell script. Wondering if revel is still used with examples so far out of date?