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.\" @(#)apply.1 8.2 (Berkeley) 4/4/94 33.\" $FreeBSD$ 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 43.Op Fl a Ar c 44.Op Fl d 45.Op Fl # 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.Sq 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 indent 72.It Fl # 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 85.Ar command , 86the 87.Fl # 88option is ignored. 89.It Fl a Ar c 90The use of the character 91.Sq Li % 92as a magic character may be changed with the 93.Fl a 94option. 95.It Fl d 96Display the commands that would have been executed, but do not actually 97execute them. 98.It Fl s Ar shell 99Pass the 100.Ar shell 101to use via the command line rather than using the SHELL environment 102variable. This option is to be used when 103.Ar shell 104is not found in /etc/shells. 105.El 106.Sh ENVIRONMENT 107The following environment variable affects the execution of 108.Nm : 109.Bl -tag -width SHELL 110.It Ev SHELL 111Pathname of shell to use. 112If this variable is not defined, the Bourne shell is used. 113.El 114.Sh EXAMPLES 115.Bl -tag -width apply -compact 116.It Li "apply echo a*" 117is similar to 118.Xr ls 1 ; 119.It Li "apply \-2 cmp a1 b1 a2 b2 a3 b3" 120compares the `a' files to the `b' files; 121.It Li "apply \-0 who 1 2 3 4 5" 122runs 123.Xr who 1 1245 times; and 125.It Li "apply \'ln %1 /usr/joe\'" * 126links all files in the current directory to the directory 127.Pa /usr/joe . 128.El 129.Sh FILES 130.Bl -tag -width /bin/sh -compact 131.It Pa /bin/sh 132default shell 133.El 134.Sh AUTHORS 135.An Rob Pike 136.Sh BUGS 137Shell metacharacters in 138.Ar command 139may have bizarre effects; it is best to enclose complicated 140commands in single quotes 141.Pq '' . 142.Sh HISTORY 143The 144.Nm 145command appeared in 146.Bx 4.2 . 147