1DBCOLDEFINE(1) User Contributed Perl Documentation DBCOLDEFINE(1)
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6 dbcoldefine - define the columns of a plain text file to make it an
7 Fsdb file
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10 dbcoldefine [-F x] [column...]
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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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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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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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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 v5.30.0 2019-09-19 DBCOLDEFINE(1)