xNightR00T File Manager

#!/bin/bash

#
# paranoia settings
#
umask 022
PATH=/sbin:/bin:/usr/sbin:/usr/bin
export PATH

SWAP_WARN='20'
CPU_WARN='3'
DISK_WARN='80'
ts=`date +%s`
last_ts=`stat -c%Y /etc/motd 2>/dev/null || echo 0`

[ $(expr $ts - $last_ts) -lt 1800 ] && exit 0

echo 'H4sIAID9014AA6WSPQ+CMBCGd/6Cyzm6oFJdVEyIkEgiuGmMJB2Mg4nVEYf+eHt31BIFP+KbtlyP
60N5c2H4lzyvsx8Mp2KgAKSEmuzOZU3AxUNF2WrWAK7SJJVDa8BhX2opaYdLARzpBxpr7awDqLLP
yRa0xhtVaF3wCYfGGzq5XEGjj+PNrZlUPZjN6GA8FUGLIcQm8tdoZtfRjYYYzXGZwQ9oYn82hLxg
V17RkkR9oa3h9AXDduhRiyHsBbGf0NJKP2KM+FcK2ll0c4dIJCNYcod40CLbaGVZ+ufT5XjzD9fG
E9tktVhnCURxluZdWEYbE0OeLhKIo53hCKEmPT56B42PpDmHAwAA' | base64 -d | gunzip > /etc/motd

if ! `grep '^PermitRootLogin' /etc/ssh/sshd_config | grep -q 'no\|without'` ; then
    printf "To better secure your server, remember to disable root password login by \n" >> /etc/motd
    printf "1. Installing your ssh pubkey into ~/.ssh/authorized_keys  then \n" >> /etc/motd
    printf "2. Find and uncomment this line #PermitRootLogin without-password \n" >> /etc/motd
    printf "   in the /etc/ssh/sshd_config file \n" >> /etc/motd
fi

free -m | awk '/Swap/{if($3/$2*100 > '$SWAP_WARN') printf(" WARNING: Swap usage is high (%dMB) \n"), $3}' >> /etc/motd
cat /proc/loadavg | awk '{ if ($3 >= '$CPU_WARN') printf(" WARNING: CPU load AVG is high (%.2f) \n"),$3}' >> /etc/motd
df -Ph |tail -n +2 | sed s/%//g | awk '{ if($5 > '$DISK_WARN') printf(" WARNING: Low disk space on %s (%d%% used) \n"),$1,$5}' >> /etc/motd 
echo '===============================================================' >> /etc/motd