|mhlist [+folder] [msgs] [-file file] [-part number] ... [-type content] ... [-headers | -noheaders] [-realsize | -norealsize] [-rcache policy] [-wcache policy] [-check | -nocheck] [-changecur | -nochangecur] [-verbose | -noverbose] [-disposition | -nodisposition] [-version] [-help]|
The mhlist command allows you to list information (essentially a table of contents) about the various parts of a collection of MIME (multi-media) messages.
mhlist manipulates MIME (multi-media messages) as specified in RFC 2045 to RFC 2049 (See mhbuild(1)).
The -headers switch indicates that a one-line banner should be displayed above the listing.
The -realsize switch tells mhlist to evaluate the native (decoded) format of each content prior to listing. This provides an accurate count at the expense of a small delay.
If the -verbose switch is present, then the listing will show any extra information that is present in the message, such as comments in the Content-Type header.
If the -disposition switch is present, then the listing will show any relevant information from the Content-Disposition header.
The option -file file directs mhlist to use the specified file as the source message, rather than a message from a folder. If you specify this file as -, then mhlist will accept the source message on the standard input. Note that the file, or input from standard input should be a validly formatted message, just like any other nmh message. It should NOT be in mail drop format (to convert a file in mail drop format to a folder of nmh messages, see inc(1)).
By default, mhlist will list information about the entire message (all of its parts). By using the -part and -type switches, you may limit the scope of this command to particular subparts (of a multipart content) and/or particular content types.
A part specification consists of a series of numbers separated by dots. For example, in a multipart content containing three parts, these would be named as 1, 2, and 3, respectively. If part 2 was also a multipart content containing two parts, these would be named as 2.1 and 2.2, respectively. Note that the -part switch is effective for only messages containing a multipart content. If a message has some other kind of content, or if the part is itself another multipart content, the -part switch will not prevent the content from being acted upon.
A content specification consists of a content type and a subtype. The initial list of standard content types and subtypes can be found in RFC 2046.
A list of commonly used contents is briefly reproduced here:
Type Subtypes ---- -------- text plain, enriched multipart mixed, alternative, digest, parallel message rfc822, partial, external-body application octet-stream, postscript image jpeg, gif, png audio basic video mpeg
A legal MIME message must contain a subtype specification.
To specify a content, regardless of its subtype, just use the name of the content, e.g., audio. To specify a specific subtype, separate the two with a slash, e.g., audio/basic. Note that regardless of the values given to the -type switch, a multipart content (of any subtype listed above) is always acted upon. Further note that if the -type switch is used, and it is desirable to act on a message/external-body content, then the -type switch must be used twice: once for message/external-body and once for the content externally referenced.
The parts of a multipart/alternative part are listed in the reverse order of their placement in the message. The listing therefore is in decreasing order of preference, as defined in RFC 1521.
The -check switch tells mhlist to check each content for an integrity checksum. If a content has such a checksum (specified as a Content-MD5 header field), then mhlist will attempt to verify the integrity of the content.
^$HOME/.mh_profile~^The user profile
^Path:~^To determine the users nmh directory ^Current-Folder:~^To find the default current folder
+folder defaults to the current folder msgs defaults to cur -nocheck -headers -realsize -rcache ask -wcache ask -changecur -noverbose -nodisposition
If a folder is given, it will become the current folder. The last message selected will become the current message, unless the -nochangecur option is specified.
|nmh-1.6||MHLIST (1)||February 12, 2013|