This file is indexed.

/usr/bin/dh_installifupdown is in debhelper 9.20131227ubuntu1.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/usr/bin/perl -w

=head1 NAME

dh_installifupdown - install if-up and if-down hooks

=cut

use strict;
use Debian::Debhelper::Dh_Lib;

=head1 SYNOPSIS

B<dh_installifupdown> [S<I<debhelper options>>] [B<--name=>I<name>]

=head1 DESCRIPTION

B<dh_installifupdown> is a debhelper program that is responsible for installing
F<if-up>, F<if-down>, F<if-pre-up>, and F<if-post-down> hook scripts into package build
directories.

=head1 FILES

=over 4

=item debian/I<package>.if-up

=item debian/I<package>.if-down

=item debian/I<package>.if-pre-up

=item debian/I<package>.if-post-down

These files are installed into etc/network/if-*.d/I<package> in
the package build directory.

=back

=head1 OPTIONS

=over 4

=item B<--name=>I<name>

Look for files named F<debian/package.name.if-*> and install them as
F<etc/network/if-*/name>, instead of using the usual files and installing them
as the package name.

=back

=cut

init();

# PROMISE: DH NOOP WITHOUT if-pre-up if-up if-down if-post-down

foreach my $package (@{$dh{DOPACKAGES}}) {
	my $tmp=tmpdir($package);
	
	foreach my $script (qw(pre-up up down post-down)) {
		my $file=pkgfile($package, "if-$script");
		if ($file ne '') {
			if (! -d "$tmp/etc/network/if-$script.d") {
				doit("install","-d","$tmp/etc/network/if-$script.d");
			}
			doit("install","-p","-m755",$file,"$tmp/etc/network/if-$script.d/".pkgfilename($package));
		}
	}
}

=head1 SEE ALSO

L<debhelper(7)>

This program is a part of debhelper.

=head1 AUTHOR

Joey Hess <joeyh@debian.org>

=cut