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.
encounters a message without a
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
field, and are consequently marked with
an asterisk in
Path: To determine your Mail directory
Alternate-Mailboxes: To determine your mailboxes
The following example produces a listing of messages 11 through 15 in
% 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 [email protected] 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
for more information. If there is sufficient room left on the line after the
fills the line with text from the body, preceded
<<, and terminated by
the body is sufficiently short.
The user profile.
inc(1), mark(1), pick(1), show(1), mh-format(4)