burst(1)burst(1)NAMEburst - explode digests into messages (only available within the mes‐
sage handling system, mh)
SYNOPSISburst [+folder] [msgs] [options]
Expands the forwarded message or digest in its current place in the
folder. The message that is expanded is replaced by the header used to
forward the message, or if it is a digest, by the table of contents.
The burst command then places the extracted messages immediately after
this, and re-numbers the rest of the messages in the folder to make
room for them. The original message or digest is not saved.
If -noinplace is given, the original message or digest is pre‐
served. The messages which burst extracts are placed at the end
of the folder. Other messages are not re-numbered. This is the
default behavior. Directs burst to be silent about reporting
messages that are not in digest format. Normally, an error mes‐
sage is printed if you attempt to use burst on a message which
does not contain encapsulated messages. Reports the general
actions that burst is taking to explode the digest.
The default settings for this command are:
+folder defaults to the current folder
msgs defaults to the current message
The burst command extracts the original messages from a forwarded mes‐
sage, discards the forwarder's header details, and places the original
messages at the end of the current folder.
By default, burst takes the current message in the current folder. You
can specify messages other than the current message by using burst with
the +folder and msgs arguments. If you specify another message, that
message becomes the current message. If you specify another folder,
that folder becomes the current folder.
The burst command will expand either a single message which contains a
number of separate messages packed together for ease of mailing, or an
Internet digest. The packf and forw commands can both pack individual
messages into a single message or file.
You can use burst in combination with forw or packf to re-direct or
forward mail more conveniently. For example, if you wanted to forward
a number of messages to yourself on another account, you could use forw
to combine them and send them in a single message. When the message
arrives, you can use burst to expand the single message into its con‐
The burst program enforces a limit on the number of messages which may
be expanded from a single message. This number is about 1000 messages.
However, there is usually no limit on the number of messages which may
reside in the folder after the messages have been expanded.
The burst command only works on messages that have been encapsulated
according to the guidelines laid down by the proposed standard RFC 934.
The encapsulated message is considered to start after burst encounters
a line of dashes. If you attempt to use burst on a message that has not
been encapsulated according to RFC 934, the results may be unpre‐
dictable. For example, burst may find an encapsulation boundary prema‐
turely, and split a single encapsulated message into two or more mes‐
Any text which appears after the last encapsulated message is not
placed in a separate message by burst. When the -inplace option is
used, this trailing information is lost. Text which appears before the
first encapsulated message is not lost.
Path: To determine your Mail directory
Msg-Protect: To set file protection when creating a new message
The user profile.
SEE ALSOforw(1), inc(1), msh(1), packf(1)
Proposed Standard for Message Encapsulation (RFC 934)