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.TH SHAR 1net "June 3, 1985" "UNIX User's Manual" "Wang Institute"
.SH NAME
shar \- create file storage archive for extraction by /bin/sh
.SH SYNOPSIS
.B shar
[-abcsv] [-d delim] [-p prefix] files
.SH DESCRIPTION
.I shar
prints its input files with special command lines around them
to be used by the shell,
.I /bin/sh ,
to extract them later.
The output can be filtered through the shell to
recreate copies of the original files.
.PP
.I shar
allows directories to be named, and
.I shar
prints the necessary commands
.ul
(mkdir & cd)
to create new directories and fill them.
.I shar
will emit commands to make executable plain files executable.
.I shar will not allow existing files to be over-written;
such files must be removed by the file extractor.
.SH OPTIONS
.de OP
.TP
.B -\\$1
..
.OP a
All the options.
The options:
.B "-v -c -b -p <tab>X"
are implied.
.OP s
Silent running.
All checking and extra output is inhibited.
.OP v
Print verbose feedback messages about what
.I shar
is doing to be printed during extraction.
Sizes of plain files are echoed to allow a simple validity check.
.OP c
Check file size on extraction by counting characters.
An error message is reported to the person doing the
extraction if the sizes don't match.
One reason why the sizes may not match is that
.I shar
will append a newline to complete incomplete last lines;
.I shar
prints a message that mentions added newlines.
Another reason why the sizes may not match is that some
network mail programs remove non-whitespace control characters.
.I shar
prints a message that mentions control characters to the extractor.
.OP b
Extract files into basenames so that files with absolute path names
are put into the current directory.
This option has strange effects when directories are archived.
.OP d delim
Use this as the ``end of file'' delimiter instead of the default.
The only reason to change it is if you suspect an file
contains the default delimiter:
.B SHAR_EOF.
.OP p prefix
Use this as the prefix to each line of the archived files.
This is to make sure that special characters at the start of lines are not
eaten up by programs like mailers.
If this option is used,
the files will be extracted with the stream editor
.B sed
rather than
.B cat
so it is more efficient and portable to avoid setting the prefix,
though perhaps less safe if you don't know what is in the files.
.SH "SEE ALSO
tar(1), cpio(1), tp(1), sh(1)
.SH AUTHOR
Gary Perlman
(based on a shell version by James Gosling,
with additions motivated by
Derek Zahn,
Michael Thompson,
H. Morrow Long,
Fred Avolio,
Gran Uddeborg,
&
Chuck Wegrzyn)
.SH LIMITATIONS
.I shar
does not know anything about
links between files
or binary files.