MOTD system information

50-system-info

#!/bin/sh

# Uptime ----------------------------------------------------------------------
upSeconds="$(/usr/bin/cut -d. -f1 /proc/uptime)"
secs=$((${upSeconds}%60))
mins=$((${upSeconds}/60%60))
hours=$((${upSeconds}/3600%24))
days=$((${upSeconds}/86400))
uptime=`printf "%d days, %02dh %02dm %02ds" "$days" "$hours" "$mins" "$secs"`

# Users -----------------------------------------------------------------------
users_logged_in=$(users | tr ' ' '\n' | sort | uniq -c | awk '{ print $2 " (" $1 ")" }' | paste -d ", " -s)

# Memory ----------------------------------------------------------------------
mem_str=$(free -m | head -n2 | tail -n1 | awk '{ printf "%5d %5d %5d\n", $3, $4, $2 }')
mem=$(free -m | head -n2 | tail -n1 | awk '{ printf "%4d MB Used, %4d MB Free, %4d MB Total\n", $3, $4, $2 }')

# Swap ------------------------------------------------------------------------
swap_str=$(free -m | tail -n1 | awk '{ printf "%6d %6d %6d\n", $3, $4, $2 }')
swap=$(free -m | tail -n1 | awk '{ printf "%4d MB Used, %4d MB Free, %4d MB Total\n", $3, $4, $2 }')

# CPU -------------------------------------------------------------------------
load_avg_str=$(cat /proc/loadavg | awk '{ printf "%.2f, %.2f, %.2f\n", $1, $2, $3 }')
load_avg=$(cat /proc/loadavg | awk '{ printf "%.2f (1 Min.), %.2f (5 Min.), %.2f (15 Min.)\n", $1, $2, $3 }')

# HDD -------------------------------------------------------------------------
hdd_str=$(df -h / | tail -n1 | awk '{ printf "%6d %6d %6d\n", $3, $4, $2 }')
hdd=$(df -h / | tail -n1 | awk '{ printf "%7s Used, %7s Free, %7s Total\n", $3, $4, $2 }')
disc_percent=$(df -h / | tail -n1 | awk '{ print $5 }')

# Network ---------------------------------------------------------------------
net_rx=$(echo "scale=1; $(cat /sys/class/net/ens3/statistics/rx_bytes)/1024/1024" | bc)
net_tx=$(echo "scale=1; $(cat /sys/class/net/ens3/statistics/tx_bytes)/1024/1024" | bc)
net=$(printf "%s MB RX, %s MB TX" $net_rx $net_tx)

ipv4=$(ifconfig ens3 | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}')
ipv6=$(ifconfig ens3 | grep "inet6 addr" | grep "Global" | awk '{print $3}')

last_login_time=$(last | head -n1 | awk '{ printf "%s, %d. %s, %s Uhr\n", $4, $6, $5, $7 }')
last_login_from=$(last | head -n1 | awk '{ printf "%s from %s\n", $1, $3 }')

cat << eof
    -- Network -------------------------------------
    Name:  wilma.weise.cloud
    Usage: ${net}

    Public IPv4 Address: ${ipv4} 
    Public IPv6 Address: ${ipv6}

    Last Login: ${last_login_time}
                ${last_login_from}
    Logged in:  ${users_logged_in}

    -- System Usage --------------------------------
    Uptime: ${uptime}

    Load:   ${load_avg}

    Memory: ${mem}
    Swap:   ${swap}
    HDD:    ${hdd}
 
    -- System Info ---------------------------------
    CPU:   `cat /proc/cpuinfo | grep 'model name' | head -1 | cut -d':' -f2`
    Distro: `lsb_release -s -d` with `uname -r` (`uname -m`)

eof