dbcoldefine - Man Page

define the columns of a plain text file to make it an Fsdb file

This program writes a new header before the data with the specified column names. It does not do any validation of the data contents; it is up to the user to verify that, other than the header, the input datastream is a correctly formatted Fsdb file.

Options

-F or --fs or --fieldseparator s: Specify the field separator.
--header H: Give the columns and field separator as a full Fsdb header (including #fsdb). Can only be used alone, not with other specifications.

This module also supports the standard fsdb options:

-d: Enable debugging output.
-i or --input InputSource: Read from InputSource, typically a file name, or - for standard input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
-o or --output OutputDestination: Write to OutputDestination, typically a file name, or - for standard output, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
--autorun or --noautorun: By default, programs process automatically, but Fsdb::Filter objects in Perl do not run until you invoke the run() method. The --(no)autorun option controls that behavior within Perl.
--help: Show help.
--man: Show full manual.

Sample Usage

Input

    102400      4937974.964736
    102400      4585247.875904
    102400      5098141.207123

Command

    cat DATA/http_bandwidth | dbcoldefine size bw

Output

    #fsdb size bw
    102400      4937974.964736
    102400      4585247.875904
    102400      5098141.207123
    # | dbcoldefine size bw

AUTHOR and COPYRIGHT

This program is distributed under terms of the GNU general public license, version 2. See the file COPYING with the distribution for details.

Referenced By

dbcoltype(1).

2024-08-02 perl v5.40.0 User Contributed Perl Documentation