progress.1

   1 .\"     $NetBSD: progress.1,v 1.4 2003/02/10 23:59:16 grant Exp $
   2 .\"
   3 .\" Copyright (c) 2003 The NetBSD Foundation, Inc.
   4 .\" All rights reserved.
   5 .\"
   6 .\" This code is derived from software contributed to The NetBSD Foundation
   7 .\" by John Hawkinson.
   8 .\"
   9 .\" Redistribution and use in source and binary forms, with or without
  10 .\" modification, are permitted provided that the following conditions
  11 .\" are met:
  12 .\" 1. Redistributions of source code must retain the above copyright
  13 .\"    notice, this list of conditions and the following disclaimer.
  14 .\" 2. Redistributions in binary form must reproduce the above copyright
  15 .\"    notice, this list of conditions and the following disclaimer in the
  16 .\"    documentation and/or other materials provided with the distribution.
  17 .\" 3. Neither the name of The NetBSD Foundation nor the names of its
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  19 .\"    from this software without specific prior written permission.
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  21 .\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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  33 .Dd January 21, 2003
  34 .Dt PROGRESS 1
  35 .Os
  36 .Sh NAME
  37 .Nm progress
  38 .Nd feed input to a command, displaying a progress bar
  39 .Sh SYNOPSIS
  40 .Nm
  41 .Op Fl z
  42 .Op Fl f Ar file
  43 .Op Fl l Ar length
  44 .Ar cmd
  45 .Op Ar args ...
  46 .Sh DESCRIPTION
  47 The
  48 .Nm
  49 utility opens a pipe to
  50 .Ar cmd
  51 and feeds an input stream into it, while displaying a progress bar to
  52 standard output.
  53 If no filename is specified,
  54 .Nm
  55 reads from standard input.
  56 Where feasible,
  57 .Nm
  58 .Xr fstat 2 Ns s
  59 the input to determine the length, so a time estimate can be calculated.
  60 .Pp
  61 If no length is specified or determined,
  62 .Nm
  63 simply displays a count of the data and the data rate.
  64 .Pp
  65 The options are as follows:
  66 .Bl -tag -width XlXlengthXX
  67 .It Fl f Ar file
  68 Read from the specified
  69 .Ar file
  70 instead of standard input.
  71 .It Fl l Ar length
  72 Use the specified length for the time estimate, rather than attempting to
  73 .Xr fstat 2
  74 the input.
  75 .It Fl z
  76 Filter the input through
  77 .Xr gzip 1 .
  78 If
  79 .Fl f
  80 is specified, calculate the length using
  81 .Ic gzip -l .
  82 .El
  83 .Sh EXIT STATUS
  84 .Nm
  85 exits 0 on success.
  86 .Sh EXAMPLES
  87 The command
  88 .Ic progress -zf file.tar.gz tar xf -
  89 will extract the
  90 .Pa file.tar.gz
  91 displaying the progress bar as time passes:
  92 .Bd -literal
  93   0% |                                 |     0       0.00 KB/s    --:-- ETA
  94  40% |**********                       |   273 KB  271.95 KB/s    00:01 ETA
  95  81% |*************************        |   553 KB  274.61 KB/s    00:00 ETA
  96 100% |*********************************|   680 KB  264.59 KB/s    00:00 ETA
  97 .Ed
  98 .Pp
  99 If it is preferred to monitor the progress of the decompression
 100 process (unlikely), then
 101 .Ic progress -f file.tar.gz tar zxf -
 102 could be used.
 103 .Sh SEE ALSO
 104 .Xr ftp 1
 105 .Sh HISTORY
 106 .Nm
 107 first appeared in
 108 .Nx 1.6.1 .
 109 The dynamic progress bar display code is part of
 110 .Xr ftp 1 .
 111 .Sh AUTHORS
 112 .Nm
 113 was written by
 114 .An John Hawkinson Aq jhawk@NetBSD.ORG .
 115 .Xr ftp 1 Ns 's
 116 dynamic progress bar was written by Luke Mewburn.
 117 .Sh BUGS
 118 Since the progress bar is displayed asynchronously, it may be
 119 difficult to read some error messages, both those produced by the
 120 pipeline, as well as those produced by
 121 .Nm
 122 itself.