msgs
—
system messages and junk mail program
msgs |
[-fhlpq ] [number]
[-number] |
The msgs
utility is used to read system messages. These
messages are sent by mailing to the login `msgs' and should be short pieces of
information which are suitable to be read once by most users of the system.
The msgs
utility is normally invoked each
time you login, by placing it in the file .login (or
.profile if you use
sh(1)). It
will then prompt you with the source and subject of each new message. If
there is no subject line, the first few non-blank lines of the message will
be displayed. If there is more to the message, you will be told how long it
is and asked whether you wish to see the rest of the message. The possible
responses are:
-y
- Type the rest of the message.
RETURN
- Synonym for y.
-n
- Skip this message and go on to the next message.
-
- Redisplay the last message.
-q
- Drop out of
msgs
; the next time
msgs
will pick up where it last left off.
-s
- Append the current message to the file ``Messages'' in the current
directory; `s-' will save the previously displayed message. A `s' or `s-'
may be followed by a space and a file name to receive the message
replacing the default ``Messages''.
-m
- A copy of the specified message is placed in a temporary mailbox and
mail(1)
is invoked on that mailbox. Both `m' and `s' accept a numeric argument in
place of the `-'.
The msgs
utility keeps track of the next
message you will see by a number in the file .msgsrc
in your home directory. In the directory /var/msgs
it keeps a set of files whose names are the (sequential) numbers of the
messages they represent. The file /var/msgs/bounds
shows the low and high number of the messages in the directory so that
msgs
can quickly determine if there are no messages
for you. If the contents of bounds is incorrect it
can be fixed by removing it; msgs
will make a new
bounds file the next time it is run with the
-s
option. If msgs
is run
with any option other than -s
, an error will be
displayed if /var/msgs/bounds does not exist.
The -s
option is used for setting up the
posting of messages. The line
msgs: "| /usr/bin/msgs
-s"
should be included in /etc/mail/aliases
(see
newaliases(1))
to enable posting of messages.
The -c
option is used for performing
cleanup on /var/msgs. A shell script entry to run
msgs
with the -c
option
should be placed in /etc/periodic/daily (see
periodic(8))
to run every night. This will remove all messages over 21 days old. A
different expiration may be specified on the command line to override the
default. You must be the superuser to use this option.
Options when reading messages include:
-f
- Do not say ``No new messages.''. This is useful in a
.login file since this is often the case
here.
-q
- Queries whether there are messages, printing ``There are new messages.''
if there are. The command ``msgs -q'' is often used in login scripts.
-h
- Print the first part of messages only.
-l
- Cause only locally originated messages to be reported.
- num
- A message number can be given on the command line, causing
msgs
to start at the specified message rather than
at the next message indicated by your .msgsrc
file. Thus
msgs -h 1
prints the first part of all messages.
- -number
- Start number messages back from the one indicated in
the .msgsrc file, useful for reviews of recent
messages.
-p
- Pipe long messages through
less(1).
Within msgs
you can also go to any
specific message by typing its number when msgs
requests input as to what to do.
The msgs
utility uses the HOME
and TERM
environment variables for the default home
directory and terminal type.
- /var/msgs/*
- database
- ~/.msgsrc
- number of next message to be presented
The msgs
command appeared in
3.0BSD.