1.\" Copyright (c) 1983, 1990, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" from: @(#)apply.1 8.2 (Berkeley) 4/4/94 33.\" $Id: apply.1,v 1.2 1994/09/21 03:17:35 glass Exp $ 34.\" 35.Dd April 4, 1994 36.Dt APPLY 1 37.Os BSD 4.2 38.Sh NAME 39.Nm apply 40.Nd apply a command to a set of arguments 41.Sh SYNOPSIS 42.Nm apply 43.Op Fl a Ns Ar c 44.Op Fl Ns Ar # 45.Ar command argument ... 46.Sh DESCRIPTION 47.Nm Apply 48runs the named 49.Ar command 50on each 51argument 52.Ar argument 53in turn. 54.Pp 55Character sequences of the form 56.Dq Li \&%d 57in 58.Ar command , 59where 60.Dq Li d 61is a digit from 1 to 9, are replaced by the 62.Li d Ns \'th 63following unused 64.Ar argument . 65In this case, the largest digit number of arguments are discarded for 66each execution of 67.Ar command . 68.Pp 69The options are as follows: 70.Bl -tag -width "-ac" 71.It Fl Ns Ar # 72Normally arguments are taken singly; the optional number 73.Fl # 74specifies the number of arguments to be passed to 75.Ar command . 76If the number is zero, 77.Ar command 78is run, without arguments, once for each 79.Ar argument . 80.Pp 81If any sequences of 82.Dq Li \&%d 83occur in command, the 84.Fl n 85option is ignored. 86.It Fl a Ns Ar c 87The use of the character 88.Dq Li % 89as a magic character may be changed with the 90.Fl a 91option. 92.El 93.Sh ENVIRONMENT VARIABLES 94The following environment variable affects the execution of 95.Nm apply : 96.Bl -tag -width SHELL 97.It Ev SHELL 98Pathname of shell to use. 99If this variable is not defined, the Bourne shell is used. 100.El 101.Sh EXAMPLES 102.Bl -tag -width apply -compact 103.It Li "apply echo a*" 104is similar to ls(1); 105.It Li "apply \-2 cmp a1 b1 a2 b2 a3 b3" 106compares the `a' files to the `b' files; 107.It Li "apply \-0 who 1 2 3 4 5" 108runs who(1) 5 times; and 109.It Li "apply \'ln %1 /usr/joe\'" * 110links all files in the current directory to the directory 111.Pa /usr/joe . 112.El 113.Sh Files 114.Bl -tag -width /bin/sh -compact 115.It Pa /bin/sh 116Default shell 117.El 118.Sh AUTHOR 119Rob Pike 120.Sh BUGS 121Shell metacharacters in 122.Ar command 123may have bizarre effects; it is best to enclose complicated 124commands in single quotes 125.Pq Sq . 126.Sh HISTORY 127The 128.Nm 129command appeared in 130.Bx 4.2 . 131