comparison head.xml @ 0:ec66f9d90ef0 draft

initial uploaded

0:ec66f9d90ef0

<tool id="unixtools_head_tool" name="Select first" version="0.1.1">
    <description>lines from a dataset (head)</description>
    <requirements>
        <requirement type="package" version="8.21">gnu_coreutils</requirement>
    </requirements>
    <command>
        head --lines $complement$count '${infile}' &gt; '${outfile}'
    </command>

    <inputs>
        <param format="txt" name="infile" type="data" label="file to cut" />

        <param name="complement" type="select" label="Operation">
            <option value="">Keep first lines</option>
            <option value="-">Remove last lines</option>
        </param>

        <param name="count" type="integer" size="5" value="10" label="Number of lines" help="These will be kept/discarded (depending on 'operation').">
            <sanitizer>
                <valid initial="string.printable">
                    <remove value="&apos;"/>
                </valid>
            </sanitizer>
        </param>
    </inputs>

    <outputs>
        <data format="input" name="outfile" metadata_source="infile"/>
    </outputs>
    <help>

**What it does**

This tool runs the **head** unix command, which discards lines from the end of a file.

    </help>
</tool>