WIP add scripts

files/check_crontab.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+cron=/etc/crontab
+md5old=/etc/crontab_save
+
+log=/var/log/check_crontab.log
+
+printf "##### %s #####\n" "$(date)" >>$log
+if [ ! -f $md5old ]
+then
+    printf "Error: %s don't exist\nCreating %s ...\n" "$md5old" "$md5old" >>$log
+    md5sum $cron >$md5old
+    exit 1
+fi
+if [ ! -s $md5old ]
+then
+    printf "Error: %s is empty\nadding md5 hash to %s ...\n" "$md5old" "$md5old" >>$log
+    md5sum $cron >$md5old
+    exit 1
+fi
+if [ ! $(md5sum -c $md5old 2>/dev/null | grep $cron | cut -d' ' -f2) = "OK" ]
+then
+    printf "Error: %s modified\nsending mail ...\n" >>$log
+    echo "crontab has changed T_T" | mail -s "!!! PANIC !!! PANIC !!!! PANIC !!!" root
+else
+    printf "file OK\n" >>$log
+fi