shell script to update a MySQL Workbench file from XML

update_workbench_file

#!/usr/bin/env ruby

begin
	def usage(message = nil)
		if !message.nil? then
			print message + "\n"
		end
		print "\nusage: update_workbench_file <MWB file> <XML file>\n\n"
	end

	if ARGV.length == 2
		xml_file, mwb_file = ARGV

		xml_filetype = `file "#{xml_file}"`
		if !xml_filetype.match(/xml/i) then
			raise "#{xml_file} is not a valid XML file!"
		end

		mwb_filetype = `file "#{mwb_file}"`
		if !mwb_filetype.match(/zip/i) then
			raise "#{mwb_file} is not a MySQL Workbench file!"
		end

		mwb_file_basename = mwb_file[/[^\/]+$/]
		xml_file_basename = mwb_file[/[^\/]+$/]

		print "extracting XML from #{mwb_file}...\n"
		`mkdir -p /tmp/workbench`
		if $?.to_i != 0 then raise "could not create temporary directory!" end
		
		`unzip "#{mwb_file}" -d /tmp/workbench`
		if $?.to_i != 0 then raise "could not unzip #{mwb_file}!" end
		
		print "overwriting XML data with #{xml_file}...\n"
		`cp "#{xml_file}" /tmp/workbench/document.mwb.xml`
		
		print "repackaging MWB file...\n"
		`cd /tmp/workbench && zip "#{mwb_file_basename}" *`
		if $?.to_i != 0 then raise "could not create zip file!" end
		
		print "updating original MWB file...\n"
		`cd /tmp/workbench && mv "#{mwb_file_basename}" "#{mwb_file}"`
		if $?.to_i != 0 then raise "could not overwrite original file: #{mwb_file}!" end
		
		print "#{mwb_file} updated successfully.\n"

		`rm -rf /tmp/workbench`
	else
		usage
	end
rescue StandardError => err
  print err.to_s + "\n"
end

You have an error in line 38 & 42 the correct code is:

#!/usr/bin/env ruby

begin
    def usage(message = nil)
        if !message.nil? then
            print message + "\n"
        end
        print "\nusage: update_workbench_file <MWB file> <XML file>\n\n"
    end

    if ARGV.length == 2
        xml_file, mwb_file = ARGV

        xml_filetype = `file "#{xml_file}"`
        if !xml_filetype.match(/xml/i) then
            raise "#{xml_file} is not a valid XML file!"
        end

        mwb_filetype = `file "#{mwb_file}"`
        if !mwb_filetype.match(/zip/i) then
            raise "#{mwb_file} is not a MySQL Workbench file!"
        end

        mwb_file_basename = mwb_file[/[^\/]+$/]
        xml_file_basename = mwb_file[/[^\/]+$/]

        print "extracting XML from #{mwb_file}...\n"
        `mkdir -p /tmp/workbench`
        if $?.to_i != 0 then raise "could not create temporary directory!" end

        `unzip "#{mwb_file}" -d /tmp/workbench`
        if $?.to_i != 0 then raise "could not unzip #{mwb_file}!" end

        print "overwriting XML data with #{xml_file}...\n"
        `cp "#{xml_file}" /tmp/workbench/document.mwb.xml`

        print "repackaging MWB file...\n"
        `(cd /tmp/workbench && zip "#{mwb_file_basename}" *)`
        if $?.to_i != 0 then raise "could not create zip file!" end

        print "updating original MWB file...\n"
        `mv /tmp/workbench/"#{mwb_file_basename}" "#{mwb_file}"`
        if $?.to_i != 0 then raise "could not overwrite original file: #{mwb_file}!" end

        print "#{mwb_file} updated successfully.\n"

        `rm -rf /tmp/workbench`
    else
        usage
    end
rescue StandardError => err
  print err.to_s + "\n"
end