rc.local/update_jdn.sh: rework disabling dsa-check-packages

When rc.local was executed, it disables dsa-check-packages via
ln -sf /bin/true /usr/local/bin/dsa-check-packages which disables it.
But when the next time update_jdn.sh run, update_jdn.sh overwrite /bin/true
with the original dsa-check-packages perl script.
All scripts which use /bin/true rather than a built-in (like bash) might
fail if some packages are outdated.
Disabling of dsa-check-packages is done now in update_jdn.sh, but after
dsa-check-packages got overwritten. It's also now using a one line shell
script instead of a symbolic link, which allows to add a comment.
Also add temporary check if /bin/true is a perl script and repair it by
reinstalling coreutils.

Signed-off-by: Holger Levsen <holger@layer-acht.org>

1 files changed, 0 insertions, 3 deletions

diff --git a/hosts/rpi2b-armhf-rb/etc/rc.local b/hosts/rpi2b-armhf-rb/etc/rc.local
index c5caa74c..23952e35 100755
--- a/hosts/rpi2b-armhf-rb/etc/rc.local
+++ b/hosts/rpi2b-armhf-rb/etc/rc.local
@@ -20,9 +20,6 @@ send_back_to_the_future() {
 	ntpdate -b de.pool.ntp.org
 	# set fake date
 	date --set="+398 days +6 hours + 23 minutes"
-	# disable check for outdated packages as in the future (like this)
-	# packages from security.d.o will appear outdated always…
-	ln -sf /bin/true /usr/local/bin/dsa-check-packages
 	# finally report success
 	echo "$(date -u) - system is running in the future now" | mail -s "$(hostname -f) in the future" root
 }