### Choose columns and sub-sequences

`choose [-o` outfile`-l# -x# -m# -c#[,#] -V# -h]` file

> `-l` number of values to be read (all)
> `-x` number of values to be skipped (0)
> `-m` number of columns to be read (1)
> `-c` columns to be read (1)
> `-o` output file name, just `-o` means file`_select`
> `-V` verbosity level (0 = only fatal errors)
> `-h` show this message

Reads a column from a file starting at `-x` +1 and writes `-l` values. Output file file`_select`.

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