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.\" $OpenBSD: uuencode.1,v 1.13 2003/06/03 02:56:21 millert Exp $
.\" $NetBSD: uuencode.1,v 1.4 1994/11/17 07:39:42 jtc Exp $
.\"
.\" Copyright (c) 1980, 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. 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
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" @(#)uuencode.1 8.1 (Berkeley) 6/6/93
.\"
.Dd June 6, 1993
.Dt UUENCODE 1
.Os
.Sh NAME
.Nm uuencode ,
.Nm uudecode
.Nd encode/decode a binary file
.Sh SYNOPSIS
.Nm uuencode
.Op Ar file
.Ar name
.Nm uudecode
.Op Fl p
.Op Ar file ...
.Sh DESCRIPTION
.Nm uuencode
and
.Nm uudecode
are used to transmit binary files over transmission mediums
that do not support formats other than printable
.Tn ASCII
data.
.Pp
.Nm uuencode
reads
.Ar file
(or by default, the standard input) and writes an encoded version
to the standard output.
The encoding uses only printing
.Tn ASCII
characters and includes the
mode of the file and the operand
.Ar name
for use by
.Nm uudecode .
.Pp
.Nm uudecode
transforms
.Dq uuencoded
files (or by default, the standard input) into the original form.
The resulting file is named
.Ar name
and will have the mode of the original file except that set-user-ID
and execute bits are not retained.
If the
.Fl p
option is specified, the output will instead be written to stdout.
.Nm uudecode
ignores any leading and trailing lines.
.Sh EXAMPLES
The following example packages up a source tree, compresses it,
uuencodes it and mails it to a user on another system.
When
.Nm uudecode
is run on the target system, the file
.Pa src_tree.tar.Z
will be created which may then be uncompressed and extracted
into the original tree.
.Pp
.Bd -literal -offset indent -compact
$ tar cf \- src_tree \&| compress \&| \\
uuencode src_tree.tar.Z \&| mail user@example.com
.Ed
.Pp
Both utilities exit 0 on success or >0 if an error occurred.
.Sh SEE ALSO
.Xr compress 1 ,
.Xr mail 1 ,
.Xr uuencode 5
.Sh STANDARDS
The
.Nm uudecode
and
.Nm uuencode
utilities conform to
.St -p1003.2-92 .
.Sh HISTORY
The
.Nm uudecode
and
.Nm uuencode
utilities appeared in
.Bx 4.0 .
.Sh BUGS
The encoded form of the file is expanded by 35% (3 bytes become 4 plus
control information).
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