dbcoldefine (1) - Linux Manuals

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

Command to display dbcoldefine manual in Linux: $ man 1 dbcoldefine

NAME

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

SYNOPSIS

dbcoldefine [-F x] [column...]

DESCRIPTION

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.