NAME

       dh-exec-subst - Debhelper executable file substition scripts

SYNOPSIS

       #! /usr/bin/dh-exec
       src/libfoo-*.so.* debian/foo-plugins/usr/lib/foo/${DEB_HOST_MULTIARCH}/

DESCRIPTION

       Being a sub-command of dh-exec(1), this program must not be ran directly, but through
       dh-exec, which automatically runs all available sub-commands if run bare; or explicitly
       with dh-exec --with=subst.

       It is a wrapper around the various other substitution helpers, and will pipe the input
       file through all the available substitution helpers. It is up to these scripts to do the
       actual work.

       When a helper fails to expand a variable within its input, it will leave it as-is, so that
       later in the pipeline it can perhaps be expanded by another program.

SCRIPTS

       dh-exec-subst-env
              Substitutes any of the available, exported environment variables into its input. It
              does not do any kind of filtering: whatever is available in the environment, will
              be available for substitution, however unsafe that may be.

              Introduced in version 0.1.

       dh-exec-subst-multiarch
              Attempts to expand any of the variables known to dpkg-architecture(1), mostly
              useful for multi-arch support.

              The command will query dpkg-architecture(1) directly, and does not rely on
              environment variables set (as the called program will prefer already set
              environment variables anyway).

              Introduced in version 0.1.

ENVIRONMENT

       DH_EXEC_SCRIPTDIR
           Indicates which directory the command-specific scripts should be sought for. If not
           specified, scripts will be searched for in /usr/share/dh-exec/.

FILES

       $DH_EXEC_SCRIPTDIR/dh-exec-subst-*
           The various scripts for the higher-level program.

VERSIONS

       The sub-command was introduced in dh-exec version 0.1.

SEE ALSO

       debhelper(1), dh-exec(1)

AUTHOR

       dh-exec-subst is copyright © 2011-2015 by Software Freedom Conservancy, Inc.

                                            2015-10-05                           DH-EXEC-SUBST(1)