erb --- Ruby Templating


     erb [--version] [-UPdnvx] [-E ext[:int]] [-S level] [-T mode]
     [-r library] [--] [file ...]


     erb is a command line front-end for ERB library, which is an
     implementation of eRuby.

     ERB provides an easy to use but powerful templating system for Ruby.
     Using ERB, actual Ruby code can be added to any plain text document for
     the purposes of generating document information details and/or flow

     erb is a part of Ruby.


     --version      Prints the version of erb.

     -E external[:internal]
     --encoding external[:internal]
                Specifies the default value(s) for external encodings and
                internal encoding. Values should be separated with colon

                You can omit the one for internal encodings, then the
                value (Encoding.default_internal) will be nil.

     -P             Evaluates lines starting with % as Ruby code and removes
                the tailing EOLs.

     -S level       Specifies the safe level in which eRuby script will run.

     -T mode        Specifies trim mode (default 0).  mode can be one of

                      0       EOL remains after the embedded ruby script
                              is evaluated.

                      1       EOL is removed if the line ends with %>.

                      2       EOL is removed if the line starts with <%
                              and ends with %>.

                      -       EOL is removed if the line ends with -%>.
                              And leading whitespaces are removed if the
                              erb directive starts with <%-.

     -U             can be one of Sets the default value for internal
                encodings (Encoding.default_internal) to UTF-8.

     --debug        Turns on debug mode.  $DEBUG will be set to true.

     --help         Prints a summary of the options.

     -n             Used with -x.  Prepends the line number to each line in
                the output.

     -v             Enables verbose mode.  $VERBOSE will be set to true.

     -x             Converts the eRuby script into Ruby script and prints it
                without line numbers.


     Here is an eRuby script

       <?xml version="1.0" ?>
       <% require 'prime' -%>
         <calc><%= 1+1 %></calc>
         <var><%= __FILE__ %></var>
         <library><%= Prime.each(10).to_a.join(", ") %></library>

       % erb -T - example.erb

       <?xml version="1.0" ?>
         <library>2, 3, 5, 7</library>



     And see ri(1) documentation for ERB class.


     Security vulnerabilities should be reported via an email to  Reported problems will be published after
     being fixed.

     And you can report other bugs and feature requests via the Ruby Issue
     Tracking System (  Do not report security
     vulnerabilities via the system because it publishes the vulnerabilities


     Written by Masatoshi SEKI.


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