integrate with cron daemon

1 files changed, 13 insertions, 0 deletions

diff --git a/uninstall.sh b/uninstall.sh
index 7c14cba..fee17b2 100755
--- a/uninstall.sh
+++ b/uninstall.sh
@@ -1,10 +1,23 @@
 #!/bin/sh
 
+# https://stackoverflow.com/questions/2990414/echo-that-outputs-to-stderr
+errcho(){ >&2 echo "$@"; }
+
 # run as root, obviously
+if [ `id -u` != 0 ]; then
+    errcho "This script needs to be run as root"
+    exit 1
+fi
 
 # revert what was done in setup.sh
 userdel 0tdns
 
+# remove our crontab entry marked with '<AUTO_GENERATED_0TDNS_ENTRY>'
+# we also remove the 'DO NOT EDIT' header, as in setup.sh
+crontab -l 2> /dev/null |
+    grep -vE '^# DO NOT EDIT THIS FILE|^# \(- installed on .*\)|^# \(Cron version .*\)' |
+    grep -v '<AUTO_GENERATED_0TDNS_ENTRY>' | crontab
+
 # if told to - also revert what was done in install.sh
 if [ "x$1" = "x--delete-files" ]; then
     rm -r /var/lib/0tdns/