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130 lines
3.7 KiB
Groff
130 lines
3.7 KiB
Groff
.\" Copyright (c) 1983, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)apply.1 8.2 (Berkeley) 4/4/94
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.\"
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.Dd April 4, 1994
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.Dt APPLY 1
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.Os BSD 4.2
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.Sh NAME
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.Nm apply
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.Nd apply a command to a set of arguments
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.Sh SYNOPSIS
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.Nm apply
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.Op Fl a Ns Ar c
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.Op Fl Ns Ar #
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.Ar command argument ...
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.Sh DESCRIPTION
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.Nm Apply
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runs the named
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.Ar command
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on each
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argument
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.Ar argument
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in turn.
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.Pp
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Character sequences of the form
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.Dq Li \&%d
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in
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.Ar command ,
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where
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.Dq Li d
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is a digit from 1 to 9, are replaced by the
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.Li d Ns \'th
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following unused
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.Ar argument .
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In this case, the largest digit number of arguments are discarded for
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each execution of
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.Ar command .
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.Pp
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The options are as follows:
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.Bl -tag -width "-ac"
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.It Fl Ns Ar #
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Normally arguments are taken singly; the optional number
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.Fl #
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specifies the number of arguments to be passed to
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.Ar command .
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If the number is zero,
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.Ar command
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is run, without arguments, once for each
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.Ar argument .
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.Pp
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If any sequences of
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.Dq Li \&%d
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occur in command, the
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.Fl n
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option is ignored.
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.It Fl a Ns Ar c
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The use of the character
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.Dq Li %
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as a magic character may be changed with the
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.Fl a
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option.
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.El
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.Sh ENVIRONMENT VARIABLES
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The following environment variable affects the execution of
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.Nm apply :
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.Bl -tag -width SHELL
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.It Ev SHELL
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Pathname of shell to use.
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If this variable is not defined, the Bourne shell is used.
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.El
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.Sh EXAMPLES
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.Bl -tag -width apply -compact
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.It Li "apply echo a*"
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is similar to ls(1);
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.It Li "apply \-2 cmp a1 b1 a2 b2 a3 b3"
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compares the `a' files to the `b' files;
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.It Li "apply \-0 who 1 2 3 4 5"
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runs who(1) 5 times; and
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.It Li "apply \'ln %1 /usr/joe\'" *
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links all files in the current directory to the directory
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.Pa /usr/joe .
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.El
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.Sh Files
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.Bl -tag -width /bin/sh -compact
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.It Pa /bin/sh
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Default shell
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.El
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.Sh AUTHOR
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Rob Pike
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.Sh BUGS
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Shell metacharacters in
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.Ar command
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may have bizarre effects; it is best to enclose complicated
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commands in single quotes
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.Pq Sq .
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 4.2 .
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