scan - produce a one-line-per-message scan listing (only
available within the message handling system, mh)
scan [+folder] [msgs] [options]
Directs scan to clear the screen. If the -clear switch is
used and the output of scan is directed to a terminal,
then scan consults the $TERM and $TERMCAP environmental
variables to determine your terminal type in order to find
out how to clear the screen prior to exiting. If the
-clear switch is used and the output of scan is not
directed to a terminal, then scan sends a formfeed prior
to exiting. Re-formats the output of scan according to
the instructions in the named file. The named formatfile
must be in mh-format style; see mh-format(4) for more
details. Re-formats the output of scan according to the
instructions in the string given. The string must be in
mh-format style; see mh-format(4) for more details. You
must place the string argument to this command in double
quotes ("). Produces a header line prior to the scan
listing. The header line displays the name of the folder
and the date and time. This can be suppressed using the
-noheader option. Prints a list of the valid options to
this command. Lists the output from scan in reverse
order, from the highest message number to the lowest. The
-noreverse option lists messages in the conventional way,
from lowest to highest numbers. The -noreverse option is
the default. Specifies the width of your screen, in
columns.
The defaults for this command are as follows:
+folder defaults to the current folder
msgs defaults to all
-noheader
-width defaults to the width of the terminal
The scan command produces a one-line-per-message listing
of the messages in the current folder.
You can scan a folder other than the current folder by
using the +folder argument. You can use the msgs argument
to produce a scan listing of a number of messages or a
range of messages in the specified folder. You can also
use scan in conjunction with a message sequence defined by
mark or pick. See mark(1) for more information on
sequences.
Each scan line contains the message number, the date, the
From: field, the Subject: field, and, if room allows, some
of the body of the message. The current message is marked
with a plus sign (+).
The scan command actually reads each of the specified messages
and parses them to extract the desired fields. If
format errors are found in any of the messages during
parsing, scan produces appropriate error messages.
Because MH has been configured with the BERK option, scan
has two additional options: -reverse and -noreverse. In
addition, scan updates the MH context prior to starting
the listing, so interrupting a long scan listing preserves
the new context. The default configuration file that is
supplied with MH has the BERK option enabled.
If scan encounters a message without a Date: field, the
date is filled in with the last write date of the message,
and an asterisk (*) is appended. This is useful for identifying
unsent message drafts. Unsent drafts are not usually
allowed to contain a Date: field, and are consequently
marked with an asterisk in scan listings.
Path: To determine your Mail directory
Alternate-Mailboxes: To determine your mailboxes
The following example produces a listing of messages 11
through 15 in the folder +inbox : % scan +inbox 11-15
11 18/01 ralph Project Plan Meeting Monday<<This
12 -21/01 johnson squash<<Thought i might
postpone
13 21/01 smith@ultrixhost support from US during
conversion
14 21/01 [email protected] new forum for discussion
of mail
15+ 21/01 [email protected] Re: new forum for discussion
of m
In this listing, the plus sign (+) on message 15 indicates
that it is the current message. The hyphen (-) on message
12 indicates that you have replied to the message. It is
produced by the -annotate option to repl; see repl(1) for
more information. If there is sufficient room left on the
line after the subject, scan fills the line with text from
the body, preceded by <<, and terminated by >> if the body
is sufficiently short.
The user profile.
inc(1), mark(1), pick(1), show(1), mh-format(4)
scan(1)
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