.\"	$OpenBSD: install.1,v 1.12 2000/03/23 21:39:56 aaron Exp $
.\"	$NetBSD: install.1,v 1.4 1994/11/14 04:57:17 jtc Exp $
.\"
.\" Copyright (c) 1987, 1990, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\"
.\"     @(#)install.1	8.1 (Berkeley) 6/6/93
.\"
.Dd June 6, 1993
.Dt INSTALL 1
.Os
.Sh NAME
.Nm install
.Nd install binaries
.Sh SYNOPSIS
.Nm install
.Op Fl bCcpSs
.Op Fl B Ar suffix
.Op Fl f Ar flags
.Op Fl g Ar group
.Op Fl m Ar mode
.Op Fl o Ar owner
.Ar file1 file2
.Nm install
.Op Fl bCcpSs
.Op Fl B Ar suffix
.Op Fl f Ar flags
.Op Fl g Ar group
.Op Fl m Ar mode
.Op Fl o Ar owner
.Ar file1
\&...
.Ar fileN directory
.Nm install
.Fl d
.Op Fl g Ar group
.Op Fl m Ar mode
.Op Fl o Ar owner
.Ar directory
\&...
.Sh DESCRIPTION
The file(s) are moved (or copied if the
.Fl c
option is specified) to the target file or directory.
If the destination is a directory, then the
.Ar file
is moved into
.Ar directory
with its original filename.
If the target file already exists, it is
either renamed to
.Ar file.old
if the
.Fl b
option is given
or overwritten
if permissions allow, An alternate backup suffix may be specified via the
.Fl B
option's argument.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl b
Backup any existing files before overwriting them by renaming
them to
.Ar file.old .
See
.Fl B
for specifying a different backup suffix.
.It Fl B Ar suffix
Use
.Ar suffix
as the backup suffix if
.Fl b
is given.
.It Fl C
Copy the file.
If the target file already exists and the files are the same,
then don't change the modification time of the target.
.It Fl c
Copy the file.
This is actually the default.
The
.Fl c
option is only included for backwards compatibility.
.It Fl d
Create directories.
Missing parent directories are created as required.
.It Fl f
Specify the target's file flags.
(See
.Xr chflags 1
for a list of possible flags and their meanings.)
.It Fl g
Specify a group.
A numeric GID is allowed.
.It Fl m
Specify an alternate mode.
The default mode is set to rwxr-xr-x (0755).
The specified mode may be either an octal or symbolic value; see
.Xr chmod 1
for a description of possible mode values.
.It Fl o
Specify an owner.
A numeric UID is allowed.
.It Fl p
Preserve the modification time.
Copy the file, as if the
.Fl C
(compare and copy) option is specified,
except if the target file doesn't already exist or is different,
then preserve the modification time of the file.
.It Fl S
Safe copy.
Normally,
.Nm
unlinks an existing target before installing the new file.
With the
.Fl S
flag a temporary file is used and then renamed to be
the target.
The reason this is safer is that if the copy or
rename fails, the existing target is left untouched.
.It Fl s
.Nm
exec's the command
.Pa /usr/bin/strip
to strip binaries so that install can be portable over a large
number of systems and binary types.
If the environment variable
.Ev STRIP
is set, it is used instead.
.El
.Pp
By default,
.Nm
preserves all file flags, with the exception of the
.Dq nodump
flag.
.Pp
The
.Nm
utility attempts to prevent moving a file onto itself.
.Pp
Installing
.Pa /dev/null
creates an empty file.
.Pp
Upon successful completion a value of 0 is returned.
Otherwise, a value of 1 is returned.
.Sh FILES
.Bl -tag -width INS@XXXXXX -compact
.It Pa INS@XXXXXX
If either
.Fl S
option is specified, or the
.Fl C
or
.Fl p
option is used in conjuction with the
.Fl s
option, temporary files named INS@XXXXXX,
where XXXXXX is decided by
.Xr mkstemp 3 ,
are created in the target directory.
.Sh ENVIRONMENT
The following environment variables affect the execution of
.Nm install :
.Bl -tag -width "STRIP"
.It Ev STRIP
For an alternate
.Xr strip 1
program to run.
Default is
.Pa /usr/bin/strip .
.Sh SEE ALSO
.Xr chflags 1 ,
.Xr chgrp 1 ,
.Xr chmod 1 ,
.Xr cp 1 ,
.Xr mv 1 ,
.Xr strip 1 ,
.Xr chown 8
.Sh HISTORY
The
.Nm
utility appeared in
.Bx 4.2 .
.Sh CAVEATS
The
.Fl C ,
.Fl p ,
and
.Fl S
flags are non-standard and should not relied upon for portability.
.Pp
Temporary files may be left in the target directory if
.Nm
exits abnormally.