NAME

       mhparam - print nmh profile and context components

SYNOPSIS

       mhparam [-help] [-version] [components] [-all] [-component | -nocomponent] [-debug]

DESCRIPTION

       mhparam  writes  the  value  of  the  specified  profile component to the standard output,
       separated by newlines.  Component name  matching  is  case-insensitive.   If  the  profile
       component  is  not  present,  the  default  value  (or nothing, if there is no default) is
       printed.

       If the switch -component is given, then the component name is  displayed  along  with  the
       profile components value.  This can be disabled with the switch -nocomponent.

       If more than one component is specified in the components list, then the switch -component
       is on by default.  If only one component is specified, then the switch -nocomponent is  on
       by default.

       If  -all  is  specified,  then  all  components in the nmh profile are displayed and other
       arguments are ignored.

       mhparam can provide other information, such as the nmh version identifier,  the  locations
       of  the nmh bindir, libexecdir, etcdir, and docdir install directories, all proc settings,
       and  the  datalocking  method  described  in   mh-profile(5).    Information   about   the
       configuration  of the nmh installation is also available, including the default mail spool
       locking method.  To test  whether  the  configuration  includes  support  for  SASL,  TLS,
       iconv(3),  and  oauth, the following commands, respectively, will output a non-null string
       to indicate support:

            mhparam sasl
            mhparam tls
            mhparam iconv
            mhparam oauth

       Conversely, no output means that the specified support is not included.  The -debug switch
       displays all such other information available from mhparam.

       Examples:

            $ mhparam path
            Mail

            $ mhparam mhlproc
            /usr/lib/mh/mhl

            $ mhparam -component Path
            Path: Mail

            $ mhparam AliasFile rmmproc
            AliasFile: aliases
            rmmproc: rmmproc

            $ mhparam -nocomponent AliasFile rmmproc
            aliases
            rmmproc

            $ mhparam path nonexistent context
            Path: Mail
            context: context

            $ mhparam version
            nmh-1.8

            $ mhparam etcdir
            /etc/nmh

            $ mhparam libexecdir
            /usr/lib/mh

            $ mhparam spoollocking
            fcntl

            $ mhparam datalocking
            fcntl

            $ mhparam sasl
            cyrus_sasl

            $ mhparam tls
            tls

            $ mhparam iconv
            iconv

            $ mhparam oauth
            oauth

       mhparam is also useful in backquoted operations:

            $ fgrep cornell.edu `mhpath +`/`mhparam aliasfile`

EXIT STATUS

       The exit status is zero if all components are found, or one if any are missing.

FILES

       $HOME/.mh_profile    The user profile
       or $MH               Rather than the standard profile
       <mh-dir>/context     The user context
       or $MHCONTEXT        Rather than the standard context

PROFILE COMPONENTS

       context:             To determine the context file

SEE ALSO

       mh-profile(5)

DEFAULTS

       `-nocomponent' if only one component is specified
       `-component' if more than one component is specified
       `components' defaults to none

CONTEXT

       None