1Fsdb::Filter::dbcolcreaUtsee(r3)Contributed Perl DocumenFtsadtbi:o:nFilter::dbcolcreate(3)
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NAME

6       dbcolcreate - create new columns
7

SYNOPSIS

9           dbcolcreate NewColumn1 [NewColumn2]
10
11       or
12
13           dbcolcreate -e DefaultValue NewColumnWithDefault
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DESCRIPTION

16       Create columns "NewColumn1", etc.  with an optional "DefaultValue".
17

OPTIONS

19       -e EmptyValue or --empty
20           Specify the value newly created columns get.
21
22       -f or --first
23           Put all new columns as the first columns of each row.  By default,
24           they go at the end of each row.
25
26       --no-recreate-fatal
27           By default, creating an existing column is an error.  With
28           --no-recreate-fatal, we ignore re-creation.
29
30       This module also supports the standard fsdb options:
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32       -d  Enable debugging output.
33
34       -i or --input InputSource
35           Read from InputSource, typically a file name, or "-" for standard
36           input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue
37           objects.
38
39       -o or --output OutputDestination
40           Write to OutputDestination, typically a file name, or "-" for
41           standard output, or (if in Perl) a IO::Handle, Fsdb::IO or
42           Fsdb::BoundedQueue objects.
43
44       --autorun or --noautorun
45           By default, programs process automatically, but Fsdb::Filter
46           objects in Perl do not run until you invoke the run() method.  The
47           "--(no)autorun" option controls that behavior within Perl.
48
49       --help
50           Show help.
51
52       --man
53           Show full manual.
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SAMPLE USAGE

56   Input:
57           #fsdb test
58           a
59           b
60
61   Command:
62           cat data.fsdb | dbcolcreate foo
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64   Output:
65           #fsdb      test    foo
66           a       -
67           b       -
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SEE ALSO

70       Fsdb.
71

CLASS FUNCTIONS

73   new
74           $filter = new Fsdb::Filter::dbcolcreate(@arguments);
75
76       Create a new dbcolcreate object, taking command-line arguments.
77
78   set_defaults
79           $filter->set_defaults();
80
81       Internal: set up defaults.
82
83   parse_options
84           $filter->parse_options(@ARGV);
85
86       Internal: parse command-line arguments.
87
88   setup
89           $filter->setup();
90
91       Internal: setup, parse headers.
92
93   run
94           $filter->run();
95
96       Internal: run over each rows.
97

99       Copyright (C) 1991-2018 by John Heidemann <johnh@isi.edu>
100
101       This program is distributed under terms of the GNU general public
102       license, version 2.  See the file COPYING with the distribution for
103       details.
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107perl v5.28.1                      2018-02-17      Fsdb::Filter::dbcolcreate(3)
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