monitoring.sh

#!/bin/bash

ARCH=$(uname -srvmo)
PCPU=$(grep 'physical id' /proc/cpuinfo | uniq | wc -l)
VCPU=$(grep processor /proc/cpuinfo | uniq | wc -l)
RAM_TOTAL=$(free -h | grep Mem | awk '{print $2}')
RAM_USED=$(free -h | grep Mem | awk '{print $3}')
RAM_PERC=$(free -k | grep Mem | awk '{printf("%.2f%%"), $3 / $2 * 100}')
DISK_TOTAL=$(df -h --total | grep total | awk '{print $2}')
DISK_USED=$(df -h --total | grep total | awk '{print $3}')
DISK_PERC=$(df -k --total | grep total | awk '{print $5}')
CPU_LOAD=$(top -bn1 | grep '^%Cpu' | xargs | awk '{printf("%.1f%%"), $2 + $4}')
LAST_BOOT=$(who -b | awk '{print($3 " " $4)}')
LVM=$(if [ $(lsblk | grep lvm | wc -l) -eq 0 ]; then echo no; else echo yes; fi)
TCP=$(grep TCP /proc/net/sockstat | awk '{print $3}')
USER_LOG=$(who | wc -l)
IP_ADDR=$(hostname -I | awk '{print $1}')
MAC_ADDR=$(ip link show | grep link/ether | awk '{print $2}')
SUDO_LOG=$(grep COMMAND /var/log/sudo/sudo.log | wc -l)

wall "
       ------------------------------------------------
       Architecture    : $ARCH
       Physical CPUs   : $PCPU
       Virtual CPUs    : $VCPU
       Memory Usage    : $RAM_USED/$RAM_TOTAL ($RAM_PERC)
       Disk Usage      : $DISK_USED/$DISK_TOTAL ($DISK_PERC)
       CPU Load        : $CPU_LOAD
       Last Boot       : $LAST_BOOT
       LVM use         : $LVM
       TCP Connections : $TCP established
       Users logged    : $USER_LOG
       Network         : $IP_ADDR ($MAC_ADDR)
       Sudo            : $SUDO_LOG commands used
       ------------------------------------------------"