1DBCOLDEFINE(1)        User Contributed Perl Documentation       DBCOLDEFINE(1)
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NAME

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

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

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

19       -F or --fs or --fieldseparator s
20           Specify the field separator.
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22       --header H
23           Give the columns and field separator as a full Fsdb header
24           (including "#fsdb").  Can only be used alone, not with other
25           specifications.
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27       This module also supports the standard fsdb options:
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29       -d  Enable debugging output.
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31       -i or --input InputSource
32           Read from InputSource, typically a file name, or "-" for standard
33           input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue
34           objects.
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36       -o or --output OutputDestination
37           Write to OutputDestination, typically a file name, or "-" for
38           standard output, or (if in Perl) a IO::Handle, Fsdb::IO or
39           Fsdb::BoundedQueue objects.
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41       --autorun or --noautorun
42           By default, programs process automatically, but Fsdb::Filter
43           objects in Perl do not run until you invoke the run() method.  The
44           "--(no)autorun" option controls that behavior within Perl.
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46       --help
47           Show help.
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49       --man
50           Show full manual.
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SAMPLE USAGE

53   Input:
54           102400      4937974.964736
55           102400      4585247.875904
56           102400      5098141.207123
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58   Command:
59           cat DATA/http_bandwidth | dbcoldefine size bw
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61   Output:
62           #fsdb size bw
63           102400      4937974.964736
64           102400      4585247.875904
65           102400      5098141.207123
66           # | dbcoldefine size bw
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SEE ALSO

69       Fsdb.  dbfilestripcomments
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72       Copyright (C) 1991-2016 by John Heidemann <johnh@isi.edu>
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74       This program is distributed under terms of the GNU general public
75       license, version 2.  See the file COPYING with the distribution for
76       details.
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80perl v5.30.1                      2020-01-30                    DBCOLDEFINE(1)
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