Sift files by header
====================

Suppose you have a set of files you want to partition on the basis of the first line in the file.

This script enables you to move a filtered subset (based on the header line) to a target directory.

You specify the pattern in the first line of the files you wish to move.  Those files containing the pattern in their header get moved, those without don't.


## Usage

    head_move.sh PATTERN FILES... DIR

## Example

    /surveys
        a.tsv
        b.tsv
        c.tsv
        d.tsv
        .
        .
        .
        /standard
        /extended


    head_move.sh "Q14" *.tsv extended