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

6       dbcoltype - define (or redefine) types for columns of an Fsdb file
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SYNOPSIS

9       dbcol [-v] [column type...]
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DESCRIPTION

12       Define the type of each column, where COLUMN and TYPE are pairs.  Or,
13       with the "-v" option, redefine all types as string.
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15       The data does not change (just the header).
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OPTIONS

18       -v or --clear-types
19           Remove definitions from columns that are listed, or from all
20           columns if none are listed.  The effect is to restore types to
21           their default type of "a" (string).
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23       and the standard fsdb options:
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25       -d  Enable debugging output.
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27       -i or --input InputSource
28           Read from InputSource, typically a file, or - for standard input,
29           or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue
30           objects.
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32       -o or --output OutputDestination
33           Write to OutputDestination, typically a file, or - for standard
34           output, or (if in Perl) a IO::Handle, Fsdb::IO or
35           Fsdb::BoundedQueue objects.
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37       --autorun or --noautorun
38           By default, programs process automatically, but Fsdb::Filter
39           objects in Perl do not run until you invoke the run() method.  The
40           "--(no)autorun" option controls that behavior within Perl.
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42       --header H
43           Use H as the full Fsdb header, rather than reading a header from
44           then input.
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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           #fsdb account passwd uid gid fullname homedir shell
55           johnh * 2274 134 John_Heidemann /home/johnh /bin/bash
56           greg * 2275 134 Greg_Johnson /home/greg /bin/bash
57           root * 0 0 Root /root /bin/bash
58           # this is a simple database
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60   Command:
61           cat DATA/passwd.fsdb account | dbcoltype uid l gid l
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63   Output:
64           #fsdb account passwd uid:l gid:l fullname homedir shell
65           johnh * 2274 134 John_Heidemann /home/johnh /bin/bash
66           greg * 2275 134 Greg_Johnson /home/greg /bin/bash
67           root * 0 0 Root /root /bin/bash
68           # this is a simple database
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SEE ALSO

71       dbcoldefine(1), dbcolcreate(1), Fsdb(3).
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74       Copyright (C) 2022 by John Heidemann <johnh@isi.edu>
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76       This program is distributed under terms of the GNU general public
77       license, version 2.  See the file COPYING with the distribution for
78       details.
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82perl v5.38.0                      2023-07-20                      DBCOLTYPE(1)
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