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dh-exec-subst - Debhelper executable file substition scripts


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


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.


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.

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.


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

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