1Fsdb::Filter::dbcoldefiUnsee(r3)Contributed Perl DocumenFtsadtbi:o:nFilter::dbcoldefine(3)
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NAME

6       dbcoldefine - define the columns of a plain text file to make it an
7       Fsdb file
8

SYNOPSIS

10       dbcoldefine [-F x] [column...]
11

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.
21
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.
26
27       This module also supports the standard fsdb options:
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29       -d  Enable debugging output.
30
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.
45
46       --help
47           Show help.
48
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
57
58   Command:
59           cat DATA/http_bandwidth | dbcoldefine size bw
60
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
70

CLASS FUNCTIONS

72   new
73           $filter = new Fsdb::Filter::dbcoldefine(@arguments);
74
75       Create a new dbcoldefine object, taking command-line arguments.
76
77   set_defaults
78           $filter->set_defaults();
79
80       Internal: set up defaults.
81
82   parse_options
83           $filter->parse_options(@ARGV);
84
85       Internal: parse command-line arguments.
86
87   setup
88           $filter->setup();
89
90       Internal: setup, parse headers.
91
92   run
93           $filter->run();
94
95       Internal: run over each rows.
96

98       Copyright (C) 1991-2016 by John Heidemann <johnh@isi.edu>
99
100       This program is distributed under terms of the GNU general public
101       license, version 2.  See the file COPYING with the distribution for
102       details.
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106perl v5.38.0                      2023-07-20      Fsdb::Filter::dbcoldefine(3)
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