apply/apply.1

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  32 .\"     @(#)apply.1     8.2 (Berkeley) 4/4/94
  33 .\" $FreeBSD: src/usr.bin/apply/apply.1,v 1.14 2002/04/19 23:16:06 charnier Exp $
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  35 .Dd April 4, 1994
  36 .Dt APPLY 1
  37 .Os
  38 .Sh NAME
  39 .Nm apply
  40 .Nd apply a command to a set of arguments
  41 .Sh SYNOPSIS
  42 .Nm
  43 .Op Fl a Ar c
  44 .Op Fl d
  45 .Op Fl #
  46 .Ar command argument ...
  47 .Sh DESCRIPTION
  48 The
  49 .Nm
  50 utility runs the named
  51 .Ar command
  52 on each
  53 argument
  54 .Ar argument
  55 in turn.
  56 .Pp
  57 Character sequences of the form
  58 .Dq Li \&%d
  59 in
  60 .Ar command ,
  61 where
  62 .Sq Li d
  63 is a digit from 1 to 9, are replaced by the
  64 .Li d Ns \'th
  65 following unused
  66 .Ar argument .
  67 In this case, the largest digit number of arguments are discarded for
  68 each execution of
  69 .Ar command .
  70 .Pp
  71 The options are as follows:
  72 .Bl -tag -width indent
  73 .It Fl #
  74 Normally arguments are taken singly; the optional number
  75 .Fl #
  76 specifies the number of arguments to be passed to
  77 .Ar command .
  78 If the number is zero,
  79 .Ar command
  80 is run, without arguments, once for each
  81 .Ar argument .
  82 .Pp
  83 If any sequences of
  84 .Dq Li \&%d
  85 occur in
  86 .Ar command ,
  87 the
  88 .Fl #
  89 option is ignored.
  90 .It Fl a Ar c
  91 The use of the character
  92 .Sq Li %
  93 as a magic character may be changed with the
  94 .Fl a
  95 option.
  96 .It Fl d
  97 Display the commands that would have been executed, but do not actually
  98 execute them.
  99 .El
 100 .Sh ENVIRONMENT
 101 The following environment variable affects the execution of
 102 .Nm :
 103 .Bl -tag -width SHELL
 104 .It Ev SHELL
 105 Pathname of shell to use.
 106 If this variable is not defined, the Bourne shell is used.
 107 .El
 108 .Sh EXAMPLES
 109 .Bl -tag -width apply -compact
 110 .It Li "apply echo a*"
 111 is similar to
 112 .Xr ls 1 ;
 113 .It Li "apply \-2 cmp a1 b1 a2 b2 a3 b3"
 114 compares the `a' files to the `b' files;
 115 .It Li "apply \-0 who 1 2 3 4 5"
 116 runs
 117 .Xr who 1
 118 5 times; and
 119 .It Li "apply \'ln %1 /usr/joe\'" *
 120 links all files in the current directory to the directory
 121 .Pa /usr/joe .
 122 .El
 123 .Sh FILES
 124 .Bl -tag -width /bin/sh -compact
 125 .It Pa /bin/sh
 126 default shell
 127 .El
 128 .Sh AUTHORS
 129 .An Rob Pike
 130 .Sh BUGS
 131 Shell metacharacters in
 132 .Ar command
 133 may have bizarre effects; it is best to enclose complicated
 134 commands in single quotes
 135 .Pq '' .
 136 .Sh HISTORY
 137 The
 138 .Nm
 139 command appeared in
 140 .Bx 4.2 .