Making sure /usr/local/bin is in my $PATH on mac
echo $PATH will print your path. If you see /usr/local/bin between some colons, then it's in your path.
open terminal and type the command below
echo $PATH
You should see something like this
/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
the presence of /usr/local/bin in the output means you are good to go