.Dd August 4, 2005 .Dt ERB 1 .Os .Sh NAME .Nm irb , erb , ri , rdoc , testrb .Nd Ruby helper programs .Sh SYNOPSIS .Nm irb .Op Ar options .Op Ar programfile .Op Ar arguments .Nm erb .Op Ar switches .Op Ar inputfile .Nm ri .Op Ar options .Op Ar names ... .Nm rdoc .Op Ar options .Op Ar names ... .Nm testrb .Op Ar options .Op Ar -- untouched arguments .Sh DESCRIPTION These are various helper programs that are part of the Ruby distribution. For more information about a specific program, you can use its .Fl -help flag. .Pp .Nm irb is the interactive Ruby interpreter. .Pp .Nm erb is Tiny eRuby, which interprets a file with embedded Ruby code. .Pp .Nm ri displays information about Ruby classes, modules, and methods. .Pp .Nm rdoc generates Ruby documentation. .Pp .Nm testrb is the Test::Unit automated test runner. .Sh SEE ALSO .Xr ruby 1