msh(1mh)msh(1mh)Namemsh - MH shell
Syntaxmsh [ -help ] [ -prompt string ] [ file ]
The command is an interactive program that implements a subset of the
normal MH commands operating on a single file in format. That is, is
used to read a file that contains a number of messages, as opposed to
the standard MH style of reading a number of files, each file being a
separate message in a folder.
The chief advantage of is that, unlike the normal MH style, it allows a
file to have more than one message in it. In addition, can be used on
other files, such as message archives which have been packed using
When invoked, reads the named file, and enters a command loop. You can
type most of the normal MH commands. The syntax and semantics of these
commands typed to are identical to their MH counterparts. In cases
where the nature of would be inconsistent with the way MH works (for
example, specifying a +folder with some commands), will duly inform
you. The commands that currently supports are:
ali burst comp dist folder
forw inc mark mhmail msgchk
next packf pick prev refile
repl rmm scan send show
sortm whatnow whom
In addition, has a command which gives a brief overview of all the
options. To terminate either type <CTRL/D>, or use the command. If
the file is writable and has been modified, then using will ask you if
the file should be updated.
A redirection facility is supported by Commands may be followed by one
of the following standard ULTRIX symbols:
| Open an interprocess channel; connect output to another
> Write output to file.
>> Append output to file.
If file starts with a tilde (~), then a C-shell-like expansion takes
place. Note that commands are interpreted by
When parsing commands to the left of any redirection symbol, will honor
the backslash (\) as the quote next-character symbol, and double quotes
(") as quote-word delimiters. All other input tokens are separated by
white space (spaces and tabs).
You may wish to use an alternative profile for the commands that exe‐
cutes; see for details of the $MH environment variable.
Options-help Prints a list of the valid options for this command.
Sets the prompt for If the string you specify includes white
space, you must enclose it in double quotes ("). If you do
not specify this option, the default prompt is (msh).
The following defaults are used by
file defaults to
The shell is not the C-shell, and a lot of the facilities provided by
the latter are not present in the former. In particular, does not sup‐
port back-quoting, history substitutions, variable substitutions, or
does not understand back-quoting. The only effective way to use inside
is to always use the -seq select option. If you add the following line
to your will work equally well from both the shell and
pick: -seq select -list
There is a strict limit of messages per file in format which can han‐
dle. Usually, this limit is 1000 messages.
Path: To determine your Mail directory
Msg-Protect: To set protections when creating a new file
fileproc: Program to file messages
showproc: Program to show messages
The user profile.
The system customization file.
See Alsocsh(1), packf(1mh), sh(1), mh_profile(5mh)msh(1mh)