1.\" $NetBSD: apply.1,v 1.12 2006/12/24 10:07:18 wiz Exp $ 2.\" 3.\" Copyright (c) 1983, 1990, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)apply.1 8.2 (Berkeley) 4/4/94 31.\" 32.Dd April 4, 1994 33.Dt APPLY 1 34.Os 35.Sh NAME 36.Nm apply 37.Nd apply a command to a set of arguments 38.Sh SYNOPSIS 39.Nm 40.Op Fl a Ns Ar c 41.Op Fl Ns Ar # 42.Ar command argument ... 43.Sh DESCRIPTION 44.Nm 45runs the named 46.Ar command 47on each 48argument 49.Ar argument 50in turn. 51.Pp 52Character sequences of the form 53.Dq Li \&%d 54in 55.Ar command , 56where 57.Dq Li d 58is a digit from 1 to 9, are replaced by the 59.Li d Ns \'th 60following unused 61.Ar argument . 62In this case, the largest digit number of arguments are discarded for 63each execution of 64.Ar command . 65.Pp 66The options are as follows: 67.Bl -tag -width "-ac" 68.It Fl Ns Ar # 69Normally arguments are taken singly; the optional number 70.Fl # 71specifies the number of arguments to be passed to 72.Ar command . 73If the number is zero, 74.Ar command 75is run, without arguments, once for each 76.Ar argument . 77.Pp 78If any sequences of 79.Dq Li \&%d 80occur in command, the 81.Fl # 82option is ignored. 83.It Fl a Ns Ar c 84The use of the character 85.Dq Li % 86as a magic character may be changed with the 87.Fl a 88option. 89.El 90.Sh ENVIRONMENT 91The following environment variable affects the execution of 92.Nm : 93.Bl -tag -width SHELL 94.It Ev SHELL 95Pathname of shell to use. 96If this variable is not defined, the Bourne shell is used. 97.El 98.Sh FILES 99.Bl -tag -width /bin/sh -compact 100.It Pa /bin/sh 101Default shell 102.El 103.Sh EXAMPLES 104.Bl -tag -width apply -compact 105.It Li "apply echo *" 106is similar to 107.Xr ls 1 ; 108.It Li "apply \-2 cmp a1 b1 a2 b2 a3 b3" 109compares the `a' files to the `b' files; 110.It Li "apply \-0 who 1 2 3 4 5" 111runs 112.Xr who 1 1135 times; and 114.It Li "apply \'ln %1 /usr/joe\'" * 115links all files in the current directory to the directory 116.Pa /usr/joe . 117.El 118.Sh HISTORY 119The 120.Nm 121command appeared in 122.Bx 4.2 . 123.Sh AUTHORS 124.An Rob Pike 125.Sh BUGS 126Shell metacharacters in 127.Ar command 128may have bizarre effects; it is best to enclose complicated 129commands in single quotes 130.Pq '' . 131