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Langue: en

Version: 05/01/2010 (fedora - 01/12/10)

Section: 1 (Commandes utilisateur)


reformime - MIME E-mail reformatting tool


reformime [options...]



is a utility for reformatting MIME messages.

Generally, reformime expects to see an m[blue]RFC 2045m[][1] compliant message on standard input, except in few cases such as the -m option.

If no options are given, reformime prints the MIME structure of the message. The output consists of so-called "MIME reference tags", one per line. For example:


This shows that the message contains two different MIME sections. The first line of the MIME structure output will always contain "1", which refers to the entire message. In this case it happens to be a multipart/mixed message. "1.1" refers to the first section of the multipart message, which happens to be a text/plain section. "1.2" refers to the second section of the message, which happens to be an application/octet-stream section.

If the message is not a MIME message, or it does not contain any attachments, reformime prints only "1", that refers to the entire message itself:

Here's the output from reformime when the first part of the message was itself a multipart/alternative section:


Arbitrarily complex MIME constructs are possible.



Parse a delivery status notification MIME message (m[blue]RFC 1894m[][2]). reformime expects to see on standard input a MIME message that consists of a delivery status notification, as defined by RFC 1894. reformime reads the message and prints on standard output a list of addresses and their corresponding delivery status, as specified in the delivery status notification. Each line printed by reformime consists of a delivery status, a space, and the address. reformime then terminates with a 0 exit status. reformime produces no output and terminates with an exit status of 1 if the standard input does not contain a delivery status notification.


Like the -d except that reformime lists the address found in the Original-Recipient: header, if it exists.


Extract the contents of the indicated MIME section, and display it on standard output. The -s option is required when -e is specified. If the indicated section uses either the base64 or quoted-printable encoding method, reformime automatically decodes it. In this case you're better off redirecting the standard output into a file.


Display MIME information for each section. reformime displays the contents of the Content-Type: header, any encoding used, and the character set. reformime also displays the byte offset in the message where each section starts and ends (and where the actual contents of the section start, after skipping all the headers).


Create a multipart/digest MIME message digest.


Rewrite message, adding or standardizing m[blue]RFC 2045m[][1] MIME headers.


Like -r but also convert 8bit-encoded MIME sections to quoted-printable.


Like -r but also convert quoted-printable-encoded MIME sections to 8bit.

-s section

Display MIME information for this section only. section is a MIME specification tag. The -s option is required if -e is also specified, and is optional with -i.


Extract the contents of the indicated MIME section to a file.


Pipe the contents of the indicated MIME section to a program.

Extracting RFC 2045 MIME section(s) to file(s)

The -x and -X options extract a specific MIME section to a file or to a pipe to an external program. Use the -s option to identify the MIME section to extract. If the -s option is not specified, every MIME section in the message is extracted, one at a time. quoted-printable and base64 encoding are automatically decoded.


Interactive extraction. reformime prints the MIME content type of each section. Answer with 'y' or 'Y' to extract the MIME section. Specify the filename at the next prompt. reformime prompts with a default filename. reformime tries to choose the default filename based on the MIME headers, if possible. If not, the default filename will be attachment1.dat (if the -s option is not specified, the next filename will be attachment2.dat, and so on).


Automatic extraction. reformime automatically extracts one or more MIME sections, and saves them to a file. The filename is formed by taking PREFIX, and appending the default filename to it. Note that there's no space between "-x" and "PREFIX". For example:
 reformime -xfiles-
This command saves MIME sections as files-attachment1.dat, then files-attachment2.dat, etc. reformime tries to append the filename specified in the MIME headers for each section, where possible. reformime replaces all suspect characters with the underscore character.

-X prog arg1 arg2 ...

The -X option must be the last option to reformime. reformime runs an external program prog, and pipes the contents of the MIME section to the program. reformime sets the environment variable CONTENT_TYPE to the MIME content type. The environment variable FILENAME gets set to the default filename of reformime's liking. If the -s option is not specified, the program runs once for every MIME section in the message. The external program, prog must terminate with a zero exit status in order for reformime to proceed to the next MIME section in the message. In any case, if prog terminates with a non-zero exit status, reformime terminates with the exit status of 20 plus prog's exit status.


reformime extracts every MIME section in the message unless the -s option is specified. This includes even the text/plain MIME content that usually precedes a binary attachment.

Adding RFC 2045 MIME headers

The -r option performs the following actions:

If there is no Mime-Version:, Content-Type:, or Content-Transfer-Encoding: header, reformime adds one.

If the Content-Transfer-Encoding: header contains 8bit or raw, but only seven-bit data is found, reformime changes the Content-Transfer-Encoding header to 7bit.

-r7 does the same thing, but also converts 8bit-encoded content that contains eight-bit characters to quoted-printable encoding.

-r8 does the same thing, but also converts quoted-printable-encoded content to 8bit, except in some situations.

Creating multipart/digest MIME digests

The -m option creates a MIME digest. reformime reads a list of filenames on standard input. Each line read from standard input contains the name of a file that is presumed to contain an RFC 2822-formatted message. reformime splices all files into a multipart/digest MIME section, and writes it to standard output.

Translating MIME headers

The following options do not read a message from standard input. These options process MIME headers via the command line, and are designed to be conveniently used by mail-handling scripts.

-h "header"

Decode a MIME-encoded "header" and print the decoded 8-bit content on standard output. The decoding gets carried out as if the contents occurred in the lqSubjectrq header. Example:
 $ reformime -h '=?iso-8859-1?Q?H=F3la!?='

-H "header"

Like -h except that header is parsed as a list of email addresses, like lqFromrq or lqTorq.

-o "text"

MIME-encode "text", and print the results on standard output.

-O "text"

Like the -o option, except that text is a structured header with RFC 2822 addresses.

-c "charset"

Use charset as the character set setting, by the -h, -H, -o and -O options.


m[blue]reformail(1)m[][3], sendmail(8), m[blue]mailbot(1)m[][4], m[blue]maildrop(1)m[][5], m[blue]maildropfilter(5)m[][6], egrep(1), grep(1), sendmail(8).


RFC 2045
RFC 1894
[set $man.base.url.for.relative.links]/reformail.html
[set $man.base.url.for.relative.links]/mailbot.html
[set $man.base.url.for.relative.links]/maildrop.html
[set $man.base.url.for.relative.links]/maildropfilter.html
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