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   1 .TH DP %manext8% 1999-04-30 "%nmhversion%"
   2 .
   3 .\" %nmhwarning%
   4 .
   5 .SH NAME
   6 dp \- nmh parser of RFC 822-style dates
   7 .SH SYNOPSIS
   8 .HP 5
   9 .na
  10 .B %nmhlibexecdir%/dp
  11 .RB [ \-help ]
  12 .RB [ \-version ]
  13 .RB [ \-form
  14 .IR formatfile ]
  15 .RB [ \-format
  16 .IR string ]
  17 .RB [ \-width
  18 .IR columns ]
  19 .I dates
  20 \&...
  21 .ad
  22 .SH DESCRIPTION
  23 .B dp
  24 is a program that parses dates according to the ARPA Internet standard.
  25 It also understands many non-standard formats,
  26 such as those produced by TOPS\-20 sites and some Unix sites using
  27 .IR ctime (3).
  28 It is useful for seeing how
  29 .B nmh
  30 will interpret a date.
  31 .PP
  32 The
  33 .B dp
  34 program treats each argument as a single date,
  35 and prints the date out in the official RFC 822 format.
  36 Hence, it is usually best to enclose each argument in quotes for the
  37 shell.
  38 .PP
  39 To override the output format used by
  40 .BR dp ,
  41 the
  42 .B \-format
  43 .I string
  44 or
  45 .B \-format
  46 .I file
  47 switches are used.
  48 This permits individual fields of the address to be extracted with ease.
  49 The string is simply a format string and the file is simply a format file.
  50 See
  51 .IR mh\-format (5)
  52 for the details.
  53 .PP
  54 Here is the default format string used by
  55 .BR dp :
  56 .PP
  57 .RS 5
  58 %<(nodate{text})error: %{text}%|%(putstr(pretty{text}))%>
  59 .RE
  60 .PP
  61 which says that if an error was detected, print the error, a `:',
  62 and the date in error.
  63 Otherwise, output the RFC 822\-proper format of the date.
  64 .SH FILES
  65 .TP 20
  66 $HOME/.mh_profile
  67 The user's profile.
  68 .SH "PROFILE COMPONENTS"
  69 None
  70 .SH "SEE ALSO"
  71 .IR fmttest (1),
  72 .IR ap (8)
  73 .PP
  74 .I "Standard for the Format of ARPA Internet Text Messages"
  75 (RFC 822)
  76 .SH DEFAULTS
  77 .PD 0
  78 .TP 20
  79 \-format
  80 As described above.
  81 .TP
  82 \-width
  83 The width of the terminal.
  84 .PD
  85 .SH CONTEXT
  86 None