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.TH BASE91 1 "November 2006" "base91 0.6.0" basE91
.SH NAME
base91, b91enc, b91dec \- basE91 encode/decode data
.SH SYNOPSIS
.B base91
.RI [ OPTION "]... [" FILE ]
.SH DESCRIPTION
Convert binary data in FILE to plain ASCII text (or vice versa), writing to
standard output. With no FILE, or when FILE is \-, read standard input.
.TP
.BR \-d ", " \-\-decode
decode data (default for
.BR b91dec );
all non\-alphabet characters (such as newlines) are ignored
.TP
.BI "\-m " SIZE
use maximum SIZE bytes of main memory for buffers (default 64K);
SIZE may be followed by a multiplicative suffix:
.I K
1024,
.I M
1024*1024
.TP
.BR \-o ", " \-\-output =\fIFILE\fR
write result to FILE instead of standard output
.TP
.BR \-v ", " \-\-verbose
run in verbose mode and write some statistics to standard error;
use it twice to increase verbosity
.TP
.BR \-w ", " \-\-wrap =\fICOLS\fR
wrap encoded lines after COLS characters (default 76);
use 0 to disable line wrapping (default for
.BR b91enc )
.TP
.B \-\-help
prints out the available program options
.TP
.B \-\-version
output version information and exit
.PP
basE91 is an advanced method for encoding binary data as ASCII characters. It
is similar to UUencode or base64, but is more efficient. The overhead produced
by basE91 depends on the input data. It amounts at most to 23% (versus 33% for
base64) and can range down to 14%, which typically occurs on 0\-byte blocks.
This makes basE91 very useful for transferring larger files over binary
insecure connections like e\-mail or terminal lines.
.SH AUTHOR
Written by Joachim Henke.
.SH "REPORTING BUGS"
Report bugs to <j\-o@users.sourceforge.net>.
.SH COPYRIGHT
Copyright (c) 2000\-2006 Joachim Henke
.SH "SEE ALSO"
base64(1), uuencode(1)
http://base91.sourceforge.net/
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