First of all, if you are starting with Rails you should not be trying to learn 2.3. That said, in 2.3 all comands are in the script
directory:
$ ls -1 script
about
console
dbconsole
destroy
generate
performance
plugin
runner
server
You can run them like this:
ruby script/generate controller welcome index
You can learn more about each command using --help
, for example:
ruby script/generate --help
Usage: script/generate generator [options] [args]
...
API documentation for 2.3 is here and Rails Guides for 2.3 are here