lines those not started with "rs"

Hi Robert;

I do appreciate your advice. Only the first column of the data is 
text. The rest columns are numeric.

Regards,

Greg

On Mon, Jan 30, 2017 at 9:36 AM, Robert Sherry <rsherry8 at comcast.net 
<mailto:rsherry8 at comcast.net>> wrote:

    Greg,

    I am assuming that your data is in a text file. R is a good tool
    but not the tool I would use for this job. The tool I would
    use is grep. The following command should get you want you want:
             grep -v "^rs" <data file name>

    Bob


    On 1/30/2017 9:23 AM, greg holly wrote:

        Hi all;

        I have a file which has about 3.000.000 lines. Most of the
        lines at first
        column start with "rs", for example, rs10000056, rs10000076
        and so on. I
        would like to get the lines which do not start with "rs" .
        Your helps
        highly appreciated.

        Regards,

        Greg

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