root/galaxy-central/tools/filters/tailWrapper.xml

<tool id="Show tail1" name="Select last">
  <description>lines from a Query</description>
  <command interpreter="perl">tailWrapper.pl $input $lineNum $out_file1</command>
  <inputs>
    <param name="lineNum" size="5" type="integer" value="10" label="Select last" help="lines"/>
    <param format="txt" name="input" type="data" label="from"/>
  </inputs>
  <outputs>
    <data format="input" name="out_file1" metadata_source="input"/>
  </outputs>
  <tests>
    <test>
      <param name="lineNum" value="10"/>
      <param name="input" value="1.bed"/>
      <output name="out_file1" file="eq-showtail.dat"/>
    </test>
  </tests>
  <help>

**What it does**

This tool outputs specified number of lines from the **end** of a dataset

-----

**Example**

- Input File::

    chr7    57134   57154   D17003_CTCF_R7  356     -
    chr7    57247   57267   D17003_CTCF_R4  207     +
    chr7    57314   57334   D17003_CTCF_R5  269     +
    chr7    57341   57361   D17003_CTCF_R7  375     +
    chr7    57457   57477   D17003_CTCF_R3  188     +

- Show last two lines of above file. The result is::

    chr7    57341   57361   D17003_CTCF_R7  375     +
    chr7    57457   57477   D17003_CTCF_R3  188     +

  </help>
</tool>