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MH-PROFILE(5mh) MH-PROFILE(5mh) NAME mh-profile, mh_profile - user customization for nmh message handler DESCRIPTION Each user of nmh is expected to have a file named .mh-profile in their home directory. This file contains a set of user parameters used by the nmh family of programs. Each entry in the file is of the format profile-component: value If the text of a profile entry is long, you may extend it across several real lines by in‐ denting the continuation lines with leading spaces or tabs. Comments may be introduced by a line starting with `#:': #: This is a comment. Blank lines are not permitted in .mh-profile. Shell quoting conventions are not available; each token is separated by whitespace. Standard Profile Entries The possible profile components are exemplified below. The only mandatory entry is `Path:'. The others are optional; some have default values if they are not present. In the notation used below, (profile, default) indicates whether the information is kept in the user's nmh profile or nmh context, and indicates what the default value is. Note that a profile compo‐ nent can only appear once. Multiple appearances will trigger a warning that all appearances after the first are ignored. Some MH programs, including mhbuild, mhshow, and mhstore, have specific profile components that are described in their respective man pages. Each component name specific to these pro‐ grams begins with the name of the program and is followed by a dash. Path: Mail Locates nmh transactions in directory “Mail”. A relative Path starts from the user's home directory. This is the only mandatory profile entry. (profile, no default) locale: locale Set the locale for all nmh programs except post, install-mh, and slocal. See the LC_ALL, LC_CTYPE, and LANG variables in the "ENVIRONMENT" section below for a reference on how the locale is set if this profile component is not used. context: context Declares the location of the nmh context file. This can be overridden by the environ‐ ment variable MHCONTEXT. See the HISTORY section below. (profile, default: <nmh- dir>/context) Current-Folder: inbox Keeps track of the current open folder. (context, default: folder specified by “Inbox”) Inbox: inbox Defines the name of the default inbox. (profile, default: inbox) Previous-Sequence: pseq Names the sequence or sequences which should be defined as the `msgs' or `msg' argument given to any nmh command. If not present or empty, no such sequences are defined. Oth‐ erwise, for each name given, the sequence is first zeroed and then each message is added to the sequence. Read mh-sequence(5) for the details about this sequence. (profile, no default) Sequence-Negation: not Defines the string which, when prefixed to a sequence name, negates that sequence. Hence, “notseen” means all those messages that are not a member of the sequence “seen”. Read mh-sequence(5) for the details. (profile, no default) Unseen-Sequence: unseen Names the sequence or sequences which should be defined as those messages which are un‐ read. The commands inc, rcvstore, mhshow, and show will add or remove messages from these sequences when they are incorporated or read. If not present or empty, no such sequences are defined. Otherwise, each message is added to, or removed from, each se‐ quence name given. Read mh-sequence(5) for the details about this sequence. (profile, no default) mh-sequences: .mh-sequences The name of the file in each folder which defines public sequences. To disable the use of public sequences, leave the value portion of this entry blank. (profile, default: .mh-sequences) atr-seq-folder: 172 178-181 212 Keeps track of the private sequence called “seq” in the specified folder. Private se‐ quences are generally used for read-only folders. See mh-sequence(5) for details about private sequences. (context, no default) Editor: prompter Defines the editor to be used by the commands comp, dist, forw, and repl. If not set, the value will be taken from the VISUAL and EDITOR environment variables. (profile, de‐ fault: prompter) Msg-Protect: 600 An octal number which defines the permission bits for new message files. See chmod(1) for an explanation of the octal number. Note that some filesystems, such as FAT32, do not support removal of read file permissions. (profile, default: 0600) Folder-Protect: 700 An octal number which defines the permission bits for new folder directories. See chmod(1) for an explanation of the octal number. (profile, default: 700) datalocking: fcntl The locking algorithm used to lock changes to any nmh data files, such as sequences or context. The locking algorithm is any one of the following entries: fcntl dot flock lockf Available locking algorithms can vary depending on the operating system. Note: cur‐ rently, transactional locking is only supported on public sequences; see mh-sequence(5) for more information. (profile, default: fcntl) program: default switches Sets default switches to be used whenever the mh program program is invoked. For exam‐ ple, one could override the “Editor:” profile component when replying to messages by adding a component such as: repl: -editor /bin/ed (profile, no defaults) lasteditor-next: nexteditor Names “nexteditor” to be the default editor after using “lasteditor”. This takes effect at the “What now?” prompt in comp, dist, forw, and repl. After editing the draft with “lasteditor”, the default editor is set to be “nexteditor”. If the user types “edit” without any arguments to “What now?”, then “nexteditor” is used. (profile, no default) Folder-Stack: folders The contents of the folder-stack for the folder command. (context, no default) Local-Mailbox: Your Username <user AT some.host> Tells the MH programs what your local mailbox is. If set, it will be used by the de‐ fault component files by programs like comp and repl to construct your default “From:” header. The text used here will be copied exactly to your “From:” header, so it should already be RFC 822 compliant. If this is set, the Signature profile entry is not used, so it should include a signature as well. (profile, default: userid AT local.hostname) Alternate-Mailboxes: mh@uci-750a, bug-mh* Tells repl and scan which additional addresses are yours. In this way, repl knows which addresses should be included in the reply, and scan knows if a message originated from you. Addresses must be separated by a comma, and the hostnames listed should be the “official” hostnames for the mailboxes you indicate, as local nicknames for hosts are not replaced with their official site names. For each address, if a host is not given, then that address on any host is considered to be you. In addition, an asterisk (`*') may appear at either or both ends of the mailbox and host to indicate wild-card match‐ ing. (profile, default: your user-id) Aliasfile: aliases other-aliases Indicates alias files for ali, whom, and send. This may be used instead of the -alias file switch. (profile, no default) Draft-Folder: drafts Indicates a default draft folder for comp, dist, forw, refile, and repl. Read mh-draft(5) for details. (profile, no default) digest-issue-list: 1 Tells forw the last issue of the last volume sent for the digest list. (context, no de‐ fault) digest-volume-list: 1 Tells forw the last volume sent for the digest list. (context, no default) MailDrop: .mail Tells inc your mail drop, if different from the default. This is superseded by the en‐ vironment variable MAILDROP. (profile, default: /var/mail/$USER) Signature: RAND MH System (agent: Marshall Rose) Tells front-end programs such as comp, forw, and repl your mail signature. (This is not to be confused with a .signature that might be appended to mails.) This is superseded by the environment variable SIGNATURE. If SIGNATURE is not set and this profile entry is not present, the “gcos” field of the /etc/passwd file will be used. Your signature will be added to the address send puts in the “From:” header; do not include an address in the signature text. The “Local-Mailbox” profile component supersedes all of this. (profile, no default) credentials: legacy Indicates how the username and password credentials will be retrieved for access to ex‐ ternal servers, such as those that provide SMTP or POP service. The supported entry values are “legacy”, “file:netrc”, and “file-nopermcheck:netrc”. With “legacy”, or if there is no credentials entry, the username is the first of: 1) -user switch to inc, msgchk, post, send, or whom program 2) the login name on the local machine The password for SMTP services is the first of: 1) password value from matching entry in file named “.netrc” in the user's home directory 2) password obtained by interactively prompting the user With a “file:netrc” credentials entry, the username is the first of: 1) -user switch to program 2) login name from matching entry in netrc file 3) value provided by user in response to interactive query Similarly, the password is provided either in the netrc file or interactively. netrc can be any valid filename, either absolute or relative to Path or $HOME. The netrc file contains authentication information, for each server, using a line of the following form. (Replace myserver, mylogin, and mypassword with your own account information.) machine myserver login mylogin password mypassword This netrc file must be owned and readable only by you. The “file-nopermcheck:netrc” credentials entry is identical in behavior to the “file” entry, with the exception that the permission checks done by “file” are not performed. This entry should be used with caution and only when absolutely necessary. (profile, default: legacy) Welcome: disable If the Welcome component is not present, or its value is not “disable”, a welcome mes‐ sage will be displayed the first time that an interactive nmh program is run after up‐ dating the nmh installation. The user must press the Enter key to continue. If the MHCONTEXT environment variable is set and non-empty (and the Welcome component is not “disable”), the welcome message is only displayed if the context file contains a version reference, and that reference is older than the installed nmh version. The ver‐ sion reference is of the form: Version: nmh-1.8 Process Profile Entries The following profile elements are used whenever an nmh program invokes some other program, such as more. The .mh-profile can be used to select alternate programs if the user wishes. The default values are given in the examples. If the profile element contains spaces, the element is split at spaces into tokens and each token is given as a separate argument to the execvp(2) system call. If the element contains shell metacharacters then the entire element is executed using /bin/sh. buildmimeproc: /usr/bin/mh/mhbuild This is the program used by whatnow to process drafts which are MIME composition files. fileproc: /usr/bin/mh/refile This program is used to refile or link a message to another folder. It is used by post to file a copy of a message into a folder given by a “Fcc:” field. It is used by the draft folder facility in comp, dist, forw, and repl to refile a draft message into an‐ other folder. It is used to refile a draft message in response to the refile directive at the “What now?” prompt. formatproc: Program called by mhl to filter a component when it is tagged with the “format” variable in the mhl filter. See mhl(5) for more information. incproc: /usr/bin/mh/inc Program called by mhmail to incorporate new mail when it is invoked with no arguments. lproc: more This program is used to list the contents of a message in response to the list directive at the “What now?” prompt. It is also used by the draft folder facility in comp, dist, forw, and repl to display the draft message. (Note that the environment variable PAGER supersedes the default built-in pager command.) mailproc: /usr/bin/mh/mhmail This is the program used to automatically mail various messages and notifications. It is used by send to post failure notices. It is used to retrieve an external-body with access-type `mail-server' (such as when storing the body with mhstore). mhlproc: /usr/lib/mh/mhl This is the program used to filter messages in various ways. It is used by mhshow to filter and display the message headers of MIME messages. When the -format or -filter option is used by forw or repl, the mhlproc is used to filter the message that you are forwarding, or to which you are replying. When the -filter option is given to send, the mhlproc is used to filter the copy of the message that is sent to “Bcc:” recipients. moreproc: more This is the program used by mhl to page the mhl formatted message when displaying to a terminal. It is also the default program used by mhshow to display message bodies (or message parts) of type text/plain. (Note that the environment variable PAGER supersedes the default built-in pager command.) packproc: /usr/bin/mh/packf Currently not used. postproc: /usr/lib/mh/post This is the program used by send, mhmail, rcvdist, and viamail (used by the sendfiles shell script) to post a message to the mail transport system. It is also called by whom (called with the switches -whom and -library) to do address verification. If the profile contains a post component and a postproc component is not present, a warning message that the post component will be ignored will be displayed by every nmh program that reads the profile and has its stderr associated with a terminal. rmmproc: none This is the program used by rmm, refile, and mhfixmsg to delete a message from a folder. sendproc: /usr/bin/mh/send This is the program used by whatnow to actually send the message showmimeproc: /usr/bin/mh/mhshow This is the program used by show to process and display non-text (MIME) messages. showproc: /usr/lib/mh/mhl This is the program used by show to filter and display text (non-MIME) messages. whatnowproc: /usr/bin/mh/whatnow This is the program invoked by comp, dist, forw, and repl to query about the disposition of a composed draft message. whomproc: /usr/bin/mh/whom This is the program used by whatnow to determine to whom a message would be sent. Profile Lookup After consulting .mh_profile, some programs read an optional profile specified by a program- specific environment variable, and then the system-wide profile /etc/nmh/mhn.defaults. These programs are mhbuild, mhshow, mhstore, and mhn. mhfixmsg is similar, but has no optional profile. The first occurrence of a component is used, e.g. .mh_profile's trumps $MHSHOW's. A compo‐ nent with no value still stops further occurrences being used, but is considered absent. The .mh-profile contains only static information, which nmh programs will not update. Changes in context are made to the context file kept in the users nmh directory. This in‐ cludes, but is not limited to: the “Current-Folder” entry and all private sequence informa‐ tion. Public sequence information is kept in each folder in the file determined by the “mh-sequences” profile entry (default is .mh-sequences). The .mh-profile may override the path of the context file, by specifying a “context” entry (this must be in lower-case). If the entry is not absolute (does not start with a “/”), then it is interpreted relative to the user's nmh directory. As a result, you can actually have more than one set of private sequences by using different context files. ENVIRONMENT The operation of nmh and its commands it also controlled by the presence of certain environ‐ ment variables. Many of these environment variables are used internally by the “What now?” interface. It's amazing all the information that has to get passed via environment variables to make the “What now?” interface look squeaky clean to the nmh user, isn't it? The reason for all this is that the nmh user can select any program as the whatnowproc, including one of the standard shells. As a result, it's not possible to pass information via an argument list. The con‐ vention is that environment variables whose names are all upper-case are user-settable; those whose names are lower-case only are used internally by nmh and should not generally be set by the user. HOME If set and non-null, it is used as the user's home directory. If not set or null, then getpwuid(3)'s pw_dir is used. LC_ALL, LC_CTYPE, and LANG These variables are used to set the locale, see locale(1). The “locale” profile entry supersedes these. MAILDROP This variable tells inc the default mail drop. This supersedes the “MailDrop” profile entry. MAILHOST This variable tells inc the POP host to query for mail to incorporate. See inc(1) for more information. MH With this environment variable, you can specify a profile other than .mh-profile to be read by the nmh programs that you invoke. If the value of MH is not absolute, (i.e., does not begin with a “/”), it will be presumed to start from the current working di‐ rectory. This is one of the very few exceptions in nmh where non-absolute pathnames are not considered relative to the user's nmh directory. MHBUILD With this environment variable, you can specify an additional user profile (file) to be read by mhbuild, in addition to the mhn.defaults profile. MHCONTEXT With this environment variable, you can specify a context other than the normal con‐ text file (as specified in the nmh profile). As usual, unless the value of MHCONTEXT is absolute, it will be presumed to start from your nmh directory. MHLDEBUG If this variable is set to a non-null value, mhl will emit debugging information. MHMTSCONF If this variable is set to a non-null value, it specifies the name of the mail trans‐ port configuration file to use by inc, post, and other programs that interact with the mail transport system, instead of the default. See mh-tailor(5). MHMTSUSERCONF If this variable is set to a non-null value, it specifies the name of a mail transport configuration file to be read in addition to the default. See mh-tailor(5). MHN With this environment variable, you can specify an additional user profile (file) to be read by mhn, in addition to the mhn.defaults profile. mhn is deprecated, so sup‐ port for this variable will be removed from a future nmh release. MHSHOW With this environment variable, you can specify an additional user profile (file) to be read by mhshow, in addition to the mhn.defaults profile. MHSTORE With this environment variable, you can specify an additional user profile (file) to be read by mhstore, in addition to the mhn.defaults profile. MHTMPDIR, TMPDIR These variables are searched, in order, for the directory in which to create some tem‐ porary files. MHTMPDIR is deprecated and will be removed in a future release of nmh. MHWDEBUG If this variable is set to a non-null value, nmh commands that use the Alternate-Mail‐ boxes profile entry will display debugging information about the values in that entry. PAGER If set to a non-null value, this supersedes the value of the default built-in pager command. SIGNATURE This variable tells send and post your mail signature. This supersedes the “Signa‐ ture” profile entry, and is not used when the “Local-Mailbox” profile component is set. USER This variable tells repl your user name and inc your default mail drop: see the “MailDrop” profile entry. USERNAME_EXTENSION This variable is for use with username_extension masquerading. See mh-tailor(5). editalt This is the alternate message. This is set by dist and repl during edit sessions so you can peruse the message being distributed or replied to. The message is also available, when the -atfile switch is used, through a link called “@” in the current directory if your current working directory and the folder the message lives in are on the same Unix filesystem, and if your current working directory is writable. mhaltmsg dist and repl set mhaltmsg to tell the whatnowproc about an alternate message associ‐ ated with the draft (the message being distributed or replied to). mhannotate This is set by dist, forw, and repl if annotations are to occur. mhdist dist sets mhdist to tell the whatnowproc that message re-distribution is occurring. mhdraft This is the path to the working draft. It is set by comp, dist, forw, and repl to tell the whatnowproc which file to ask “What now?” questions about. mheditor This is set by comp, repl, forw, and dist to tell the whatnowproc the user's choice of editor (unless overridden by -noedit). mhfolder This is the folder containing the alternate message. It is set by dist and repl dur‐ ing edit sessions so you can peruse other messages in the current folder besides the one being distributed or replied to. The environment variable mhfolder is also set by next, prev, and show for use by mhl. mhinplace This is set by dist, forw, and repl if annotations are to occur. mhmessages This is set by dist, forw, and repl if annotations are to occur. mhuse This may be set by comp. FILES $HOME/.mh-profile The user's profile. <mh-dir>/context The user's context <folder>/.mh-sequences Public sequences for <folder>. SEE ALSO mhbuild(1), mhshow(1), mhstore(1), mh-sequence(5), nmh(7), post(8) BUGS There is some question as to what kind of arguments should be placed in the profile as op‐ tions. In order to provide a clear answer, recall the command line semantics of all nmh pro‐ grams: conflicting switches (e.g. -header and -noheader) may occur more than one time on the command line, with the last switch taking effect. Other arguments, such as message se‐ quences, filenames and folders, are always remembered on the invocation line and are not su‐ perseded by following arguments of the same type. Hence, it is safe to place only switches (and their arguments) in the profile. If one finds that an nmh program is being invoked again and again with the same arguments, and those arguments aren't switches, then there are a few possible solutions to this problem. The first is to create a (soft) link in your $HOME/bin directory to the nmh program of your choice. By giving this link a different name, you can create a new entry in your profile and use an alternate set of defaults for the nmh command. Similarly, you could create a small shell script which called the nmh program of your choice with an alternate set of invocation line switches (using links and an alternate profile entry is preferable to this solution). Finally, the csh user could create an alias for the command of the form: alias cmd 'cmd arg1 arg2 ...' In this way, the user can avoid lengthy type-in to the shell, and still give nmh commands safely. (Recall that some nmh commands invoke others, and that in all cases, the profile is read, meaning that aliases are disregarded beyond an initial command invocation) nmh-1.8 2016-10-19 MH-PROFILE(5mh)
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