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erb

ERB(1)							 Ruby Programmers Reference Guide						    ERB(1)

NAME

     erb -- Ruby Templating

SYNOPSIS

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

DESCRIPTION

     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 control.

     erb is a part of Ruby.

OPTIONS

     --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.

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

     -h
     --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.

EXAMPLES

     Here is an eRuby script

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

     Command
	   % erb -T - example.erb
     prints

	   <?xml version="1.0" ?>
	   <erb-example>
	     <calc>2</calc>
	     <var>example.erb</var>
	     <library>2, 3, 5, 7</library>
	   </erb-example>

SEE ALSO

     ruby(1).

     And see ri(1) documentation for ERB class.

REPORTING BUGS

     Security vulnerabilities should be reported via an email to <security@ruby-lang.org>.  Reported problems will be published after being fixed.

     And you can report other bugs and feature requests via the Ruby Issue Tracking System (http://bugs.ruby-lang.org).  Do not report security
     vulnerabilities via the system because it publishes the vulnerabilities immediately.

AUTHORS

     Written by Masatoshi SEKI.

UNIX
								 November 7, 2012							      UNIX

Shell Programming and Scripting