1Fsdb::Filter::dbcolneatUesne(r3)Contributed Perl DocumenFtsadtbi:o:nFilter::dbcolneaten(3)
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NAME

6       dbcolneaten - pretty-print columns of Fsdb data (assuming a monospaced
7       font)
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SYNOPSIS

10       dbcolneaten [-E] [field_settings]
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DESCRIPTION

13       dbcolneaten arranges that the Fsdb data appears in neat columns if you
14       view it with a monospaced font.  To do this, it pads out each field
15       with spaces to line up the next field.
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17       Field settings are of the form
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19           field op value
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21       OP is >=, =, or <= specifying that the width of that FIELD must be
22       more, equal, or less than that VALUE
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24       dbcolneaten runs in O(1) memory but disk space proportional to the size
25       of data.
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OPTIONS

28       -E or --noeoln
29           Omit padding for the last column (at the end-of-the-line).
30           (Default behavior.)
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32       -e or --eoln
33           Do padding and include an extra field separator after the last
34           column.  (Useful if you're interactively adding a column.)
35
36       This module also supports the standard fsdb options:
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38       -d  Enable debugging output.
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40       -i or --input InputSource
41           Read from InputSource, typically a file name, or "-" for standard
42           input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue
43           objects.
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45       -o or --output OutputDestination
46           Write to OutputDestination, typically a file name, or "-" for
47           standard output, or (if in Perl) a IO::Handle, Fsdb::IO or
48           Fsdb::BoundedQueue objects.
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50       --autorun or --noautorun
51           By default, programs process automatically, but Fsdb::Filter
52           objects in Perl do not run until you invoke the run() method.  The
53           "--(no)autorun" option controls that behavior within Perl.
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55       --help
56           Show help.
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58       --man
59           Show full manual.
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SAMPLE USAGE

62   Input:
63               #fsdb fullname homedir uid gid
64               Mr._John_Heidemann_Junior       /home/johnh     2274    134
65               Greg_Johnson    /home/greg      2275    134
66               Root    /root   0       0
67               # this is a simple database
68               #   | dbcol fullname homedir uid gid
69
70   Command:
71           dbcolneaten
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73   Output:
74               #fsdb -F s fullname       homedir     uid  gid
75               Mr._John_Heidemann_Junior /home/johnh 2274 134
76               Greg_Johnson              /home/greg  2275 134
77               Root                      /root       0    0
78               # this is a simple database
79               #   | dbcol fullname homedir uid gid
80               #   | dbcolneaten
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BUGS

83       Does not handle tab separators correctly.
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SEE ALSO

86       Fsdb.
87

CLASS FUNCTIONS

89   new
90           $filter = new Fsdb::Filter::dbcolneaten(@arguments);
91
92       Create a new dbcolneaten object, taking command-line arguments.
93
94   set_defaults
95           $filter->set_defaults();
96
97       Internal: set up defaults.
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99   parse_options
100           $filter->parse_options(@ARGV);
101
102       Internal: parse command-line arguments.
103
104   setup
105           $filter->setup();
106
107       Internal: setup, parse headers.
108
109   format_header
110           $filter->format_header($out)
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112       Format the header for the current object to output stream $out.
113
114   run
115           $filter->run();
116
117       Scan the data once, then rewrite it neatly.
118

120       Copyright (C) 1991-2018 by John Heidemann <johnh@isi.edu>
121
122       This program is distributed under terms of the GNU general public
123       license, version 2.  See the file COPYING with the distribution for
124       details.
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128perl v5.38.0                      2023-07-20      Fsdb::Filter::dbcolneaten(3)
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