Motd para System Admins servidores Linux

Segue um script para configurar o MOTD em servidores linux.

#!/bin/bash
#
# Server Status Script

CPUTIME=$(ps -eo pcpu | awk ‘NR>1’ | awk ‘{tot=tot+$1} END {print tot}’)
CPUCORES=$(cat /proc/cpuinfo | grep -c processor)
UP=$(echo `uptime` | awk ‘{ print $3 ” ” $4 }’)
echo ”
System Status
Updated: `date`
– Server Name = `hostname`
– Public IP = `dig +short txt ch whoami.cloudflare @1.0.0.1`
– OS Version = `lsb_release -c | awk {‘print $2’}`
– Load Averages = `cat /proc/loadavg`
– System Uptime = `echo $UP`
– Platform Data = `uname -a`
– CPU Usage (average) = `echo $CPUTIME / $CPUCORES | bc`%
– Memory free (real) = `free -m | head -n 2 | tail -n 1 | awk {‘print $4’}` Mb
– Memory free (cache) = `free -m | head -n 3 | tail -n 1 | awk {‘print $3’}` Mb
– Swap in use = `free -m | tail -n 1 | awk {‘print $3’}` Mb
– Disk Total = `df -h | grep /dev/sda | awk ‘{ a = $2 } END { print a }’`
– Disk Usado = `df -h | grep /dev/sda | awk ‘{ a = $3 } END { print a }’`
– Disk Disponivel = `df -h | grep /dev/sda | awk ‘{ a = $4 } END { print a }’`
” > /etc/motd
# End of script