New package: GNU Datamash
lists.gnu.org
lists.gnu.org
The last two examples on http://www.gnu.org/software/datamash/examples/ seem to indicate that -H adds output headers, but it also requires input headers, and there is no way for the program to discriminate a header line from a sample. So, if your FILE.TXT doesn't have headers, the tool will silently ignore the first sample in the input file.