1.\" $NetBSD: apply.1,v 1.9 2001/10/17 22:02:30 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. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)apply.1 8.2 (Berkeley) 4/4/94 35.\" 36.Dd April 4, 1994 37.Dt APPLY 1 38.Os 39.Sh NAME 40.Nm apply 41.Nd apply a command to a set of arguments 42.Sh SYNOPSIS 43.Nm 44.Op Fl a Ns Ar c 45.Op Fl Ns Ar # 46.Ar command argument ... 47.Sh DESCRIPTION 48.Nm 49runs the named 50.Ar command 51on each 52argument 53.Ar argument 54in turn. 55.Pp 56Character sequences of the form 57.Dq Li \&%d 58in 59.Ar command , 60where 61.Dq Li d 62is a digit from 1 to 9, are replaced by the 63.Li d Ns \'th 64following unused 65.Ar argument . 66In this case, the largest digit number of arguments are discarded for 67each execution of 68.Ar command . 69.Pp 70The options are as follows: 71.Bl -tag -width "-ac" 72.It Fl Ns Ar # 73Normally arguments are taken singly; the optional number 74.Fl # 75specifies the number of arguments to be passed to 76.Ar command . 77If the number is zero, 78.Ar command 79is run, without arguments, once for each 80.Ar argument . 81.Pp 82If any sequences of 83.Dq Li \&%d 84occur in command, the 85.Fl # 86option is ignored. 87.It Fl a Ns Ar c 88The use of the character 89.Dq Li % 90as a magic character may be changed with the 91.Fl a 92option. 93.El 94.Sh ENVIRONMENT 95The following environment variable affects the execution of 96.Nm "" : 97.Bl -tag -width SHELL 98.It Ev SHELL 99Pathname of shell to use. 100If this variable is not defined, the Bourne shell is used. 101.El 102.Sh FILES 103.Bl -tag -width /bin/sh -compact 104.It Pa /bin/sh 105Default shell 106.El 107.Sh EXAMPLES 108.Bl -tag -width apply -compact 109.It Li "apply echo a*" 110is similar to 111.Xr ls 1 ; 112.It Li "apply \-2 cmp a1 b1 a2 b2 a3 b3" 113compares the `a' files to the `b' files; 114.It Li "apply \-0 who 1 2 3 4 5" 115runs 116.Xr who 1 1175 times; and 118.It Li "apply \'ln %1 /usr/joe\'" * 119links all files in the current directory to the directory 120.Pa /usr/joe . 121.El 122.Sh HISTORY 123The 124.Nm 125command appeared in 126.Bx 4.2 . 127.Sh AUTHORS 128.An Rob Pike 129.Sh BUGS 130Shell metacharacters in 131.Ar command 132may have bizarre effects; it is best to enclose complicated 133commands in single quotes 134.Pq '' . 135