man tnef Command

Man page for apt-get tnef Command

Man Page for tnef in Linux

Ubuntu Man Command : man tnef

Man Tnef  Command

This tutorial shows the man page for man tnef in linux.

Open terminal with 'su' access and type the command as shown below:
man tnef

Result of the Command Execution shown below:

TNEF(1)                                                                                                                                           TNEF(1)

tnef decode Microsoft's Transport Neutral Encapsulation Format

tnef [options] [FILE]

tnef { help | version}

This manual page documents the tnef filter. tnef decodes e mail attachments encoded in Microsoft's Transport Neutral Encapsulation Format (here
after, TNEF), which "wraps" Microsoft e mail attachments.

Unfortunately,thesewrappedattachmentsareinaccessibleto any e mail client that does not understand TNEF. Fortunately, the tnef filter can be used
by any MIME aware client to unpack these attachments.

f FILE, file=FILE
use FILE as input (' ' denotes stdin). When this option is omitted, tnef reads data from stdin.

C DIR, directory=DIR
unpack file attachments into DIR.

x SIZE, maxsize=SIZE
limit maximum size of extracted archive (bytes)

t, list
list attached files, do not extract.

w, interactive, confirmation
ask for confirmation for every action.

when extracting attachments, overwrite existing files.

number backups
when extracting attachments, if file FOO will be overwritten, create FOO.n instead.

use paths
honor file pathnames specified in the TNEF attachment. For security reasons, paths to attached files are ignored by default.

save body FILE
Save message body data found in the TNEF data. There can be up to three message bodies in the file, plain text, HTML encoded, and RTF
encoded. Which are saved is specified by the body pref option. By default the message bodies are written to a file named message with
an extension based upon the type (txt, html, rtf).

body pref PREF
Specifies which of the possibly three message body formats will be saved. PREF can be up to three characters long and each character must
be one of 'r', 'h', or 't' specifying RTF, HTML or text. The order is the order that the data will be checked, the first type found will
be saved. If PREF is the special value of 'all' then any and all message body data found will be saved. The default is 'rht'.

save rtf FILE
DEPRECATED. Equivalent to save body FILE body pref=r

h, help
show usage message.

V, version
display version and copyright.

v, verbose
produce verbose output.

enable debug output.

The following example demonstrates typical tnef usage with a popular Unix mail client called "mutt".

Step 1 Configure ~/.mailcap
Mutt can't use tnef for its intended purpose until an appropriate content type definition exists in ~/.mailcap . Here's a sample definition:

application/ms tnef; tnef w %s

This mailcap entry says that whenever the MIME content type:

application/ms tnef

is encountered, use this command to decode it:

tnef w %s

The latter command string invokes tnef, specifying both the w option and the attachment (created as a temporary file) as command line arguments.

Step 2 Add The Filter To $PATH
Mutt can't invoke tnef if the filter isn't accessible via $PATH.

Step 3 Test Mutt
Use mutt to read a message that includes a TNEF attachment. Mutt will note that an attachment of type "application/ms tnef is unsupported".

Press the "v" key to open mutt's "view attachment" menu.

Move the cursor over the TNEF attachment and press the enter key to "view" the attachment. Mutt will launch tnef and invoke it using the command
line syntax specified in ~/.mailcap (step 1). tnef then decodes all file(s) included in the TNEF attachment, prompting for confirmation prior to
creating an individual file (refer to w option above). w is useful here because it gives the end user a chance to view the filename(s) included
in the mail message.

Note that Mutt's attachment menu also supports a pipe option, which permits the user to pipe attachments to an external filter (how convenient).
So, to list the contents of a TNEF attachment prior to decoding it, press the "|" key and enter this command:

tnef t

metamail(1), mailcap(4), mutt(1), other email clients.

Mark Simpson.

Report bugs to Mark Simpson

This web page:

describes how to configure Microsoft email clients so that the TNEF format is disabled when sending messages to non TNEF compatible clients.

Filter TNEF MIME Decoder TNEF(1)

Related Topics

Apt Get Commands