# phpman > info > mhparam

[MHPARAM(1mh)](https://www.chedong.com/phpMan.php/man/MHPARAM/1mh/markdown)                                                      [MHPARAM(1mh)](https://www.chedong.com/phpMan.php/man/MHPARAM/1mh/markdown)

NAME
       mhparam - print nmh profile and context components

SYNOPSIS
       mhparam [-help] [-version] [components] [-all] [-component | -nocompo-
            nent] [-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 spec-
       ified, then the switch -nocomponent is on by default.

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

       mhparam can provide other information, such as the nmh version  identi-
       fier,  the  locations of the nmh bindir, libexecdir, etcdir, and docdir
       install directories, all proc settings, and the datalocking method  de-
       scribed  in the [mh-profile(5)](https://www.chedong.com/phpMan.php/man/mh-profile/5/markdown) man page.  Information about the configu-
       ration 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)](https://www.chedong.com/phpMan.php/man/iconv/3/markdown), and oauth, the following commands, re-
       spectively, 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.

       Note  that  the  internal  libdir component has been replaced by libex-
       ecdir.  The old form is deprecated and will be removed in a future  re-
       lease.

       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-1.7.1

            % 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
       mhparam  returns the number of components that were not found, but lim-
       its the return value to 120 to avoid ambiguity, e.g.  127  is  used  by
       shells  to  indicate  `command  not  found',  and  256 would wrap to 0,
       falsely indicating success.

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)](https://www.chedong.com/phpMan.php/man/mh-profile/5/markdown)

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

CONTEXT
       None

nmh-1.7.1                         2017-02-18                      [MHPARAM(1mh)](https://www.chedong.com/phpMan.php/man/MHPARAM/1mh/markdown)