1.\" Copyright (c) 1980, 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.\" @(#)uuencode.1 8.1 (Berkeley) 6/6/93 33.\" $FreeBSD$ 34.\" 35.Dd January 27, 2002 36.Dt UUENCODE 1 37.Os 38.Sh NAME 39.Nm uuencode , 40.Nm uudecode 41.Nd encode/decode a binary file 42.Sh SYNOPSIS 43.Nm 44.Op Fl m 45.Op Fl o Ar output_file 46.Op Ar file 47.Ar name 48.Nm uudecode 49.Op Fl cips 50.Op Ar 51.Nm uudecode 52.Op Fl i 53.Fl o Ar output_file 54.Op Ar file 55.Sh DESCRIPTION 56.Nm Uuencode 57and 58.Nm uudecode 59are used to transmit binary files over transmission mediums 60that do not support other than simple 61.Tn ASCII 62data. 63.Pp 64.Nm Uuencode 65reads 66.Ar file 67(or by default the standard input) and writes an encoded version 68to the standard output, or 69.Ar output_file 70if one has been specified. 71The encoding uses only printing 72.Tn ASCII 73characters and includes the 74mode of the file and the operand 75.Ar name 76for use by 77.Nm uudecode . 78.Pp 79.Nm Uudecode 80transforms 81.Em uuencoded 82files (or by default, the standard input) into the original form. 83The resulting file is named either 84.Ar name 85or (depending on options passed to 86.Nm uudecode ) 87.Ar output_file 88and will have the mode of the original file except that setuid 89and execute bits are not retained. 90.Nm Uudecode 91ignores any leading and trailing lines. 92.Pp 93The following options are available for 94.Nm : 95.Bl -tag -width ident 96.It Fl m 97Use the Base64 method of encoding, rather than the traditional 98.Nm 99algorithm. 100.It Fl o Ar output_file 101Output to 102.Ar output_file 103instead of standard output. 104.El 105.Pp 106The following options are available for 107.Nm uudecode : 108.Bl -tag -width ident 109.It Fl c 110Decode more than one uuencode'd file from 111.Ar file 112if possible. 113.It Fl i 114Do not overwrite files. 115.It Fl o Ar output_file 116Output to 117.Ar output_file 118instead of any pathname contained in the input data. 119.It Fl p 120Decode 121.Ar file 122and write output to standard output. 123.It Fl s 124Do not strip output pathname to base filename. 125By default 126.Nm uudecode 127deletes any prefix ending with the last slash '/' for security 128purpose. 129.El 130.Sh EXAMPLES 131The following example packages up a source tree, compresses it, 132uuencodes it and mails it to a user on another system. 133When 134.Nm uudecode 135is run on the target system, the file ``src_tree.tar.Z'' will be 136created which may then be uncompressed and extracted into the original 137tree. 138.Pp 139.Bd -literal -offset indent -compact 140tar cf \- src_tree \&| compress \&| 141uuencode src_tree.tar.Z \&| mail sys1!sys2!user 142.Ed 143.Pp 144The following example unpack all uuencode'd 145files from your mailbox into your current working directory. 146.Pp 147.Bd -literal -offset indent -compact 148uudecode -c < $MAIL 149.Ed 150.Pp 151The following example extract a compress'ed tar 152archive from your mailbox 153.Pp 154.Bd -literal -offset indent -compact 155uudecode -o /dev/stdout < $MAIL | zcat | tar xfv - 156.Ed 157.Sh SEE ALSO 158.Xr basename 1 , 159.Xr compress 1 , 160.Xr mail 1 , 161.Xr uucp 1 , 162.Xr uuencode 5 163.Sh BUGS 164The encoded form of the file is expanded by 35% (3 bytes become 4 plus 165control information). 166.Sh HISTORY 167The 168.Nm uudecode 169and 170.Nm 171utilities appeared in 172.Bx 4.0 . 173