Added motd.sh
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135
motd.sh
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135
motd.sh
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#!/bin/bash
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# /etc/profile.d/motd.sh — Custom MOTD (Ubuntu 24.04 compatible)
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# Make executable: chmod +x /etc/profile.d/motd.sh
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# Disable default MOTD: chmod -x /etc/update-motd.d/*
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RESET='\033[0m'
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BOLD='\033[1m'
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DIM='\033[2m'
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[0;33m'
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BLUE='\033[0;34m'
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line() { echo -e "${YELLOW}── $1 $(printf '─%.0s' $(seq 1 $((46 - ${#1}))))${RESET}"; }
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# OS detection — lsb_release may not be installed on 24.04 minimal
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OS_NAME=$(lsb_release -ds 2>/dev/null)
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[[ -z "$OS_NAME" ]] && OS_NAME=$(grep PRETTY_NAME /etc/os-release 2>/dev/null | cut -d'"' -f2)
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# ── Header (single line) ─────────────────────────────────────────────────────
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echo -e "${BLUE}${BOLD} $(whoami)@$(hostname -f)${RESET} ${DIM}${OS_NAME} kernel $(uname -r)${RESET}"
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# ── System ───────────────────────────────────────────────────────────────────
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line "System"
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UPTIME=$(uptime -p | sed 's/up //')
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LOAD=$(cut -d' ' -f1-3 /proc/loadavg | tr ' ' ',')
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# CPU via /proc/stat (two samples, 0.2s apart)
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read CPU_LINE1 < /proc/stat; sleep 0.2; read CPU_LINE2 < /proc/stat
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IDLE1=$(echo $CPU_LINE1 | awk '{print $5}')
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TOTAL1=$(echo $CPU_LINE1 | awk '{for(i=2;i<=NF;i++) t+=$i; print t}')
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IDLE2=$(echo $CPU_LINE2 | awk '{print $5}')
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TOTAL2=$(echo $CPU_LINE2 | awk '{for(i=2;i<=NF;i++) t+=$i; print t}')
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CPU=$(awk "BEGIN {printf \"%.0f\", (1 - ($IDLE2-$IDLE1) / ($TOTAL2-$TOTAL1)) * 100}")
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MEM_USED=$(free -h | awk '/^Mem:/ {print $3}')
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MEM_TOTAL=$(free -h | awk '/^Mem:/ {print $2}')
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MEM_PCT=$(free | awk '/^Mem:/ {printf "%.0f", $3/$2*100}')
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DISK_INFO=$(df -h / | awk 'NR==2 {print $3"/"$2" ("$5")"}')
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IP=$(hostname -I 2>/dev/null | awk '{print $1}')
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[[ $MEM_PCT -gt 80 ]] && MC=$RED || ([[ $MEM_PCT -gt 60 ]] && MC=$YELLOW || MC=$GREEN)
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# Two stat lines instead of six
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echo -e " ${DIM}up${RESET} $UPTIME ${DIM}load${RESET} $LOAD ${DIM}cpu${RESET} ${GREEN}${CPU}%${RESET}"
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echo -e " ${DIM}mem${RESET} ${MC}${MEM_USED}/${MEM_TOTAL} (${MEM_PCT}%)${RESET} ${DIM}disk/${RESET} $DISK_INFO ${DIM}ip${RESET} $IP"
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# ── Recent Logins & Failed Attempts ──────────────────────────────────────────
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line "Logins"
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# Trim full timestamps down to day + date + duration only
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last -n 3 -F 2>/dev/null | grep -v "^$\|reboot\|wtmp\|still" | \
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awk '{
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user=$1; tty=$2; host=$3;
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day=$4; mon=$5; dom=$6;
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# Duration is in last field like (03:21) or (00:14)
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dur=$NF; gsub(/[()]/,"",dur);
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printf " \033[0;32m✔\033[0m \033[2m%-8s\033[0m %-6s %-18s %s %s %s \033[2m(%s)\033[0m\n",
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user, tty, host, day, mon, dom, dur
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}'
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# Failed login attempts
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TODAY=$(date '+%b %e' | sed 's/ / /')
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if [[ -r /var/log/auth.log ]]; then
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FAIL_IPS=$(grep "Failed password\|Invalid user" /var/log/auth.log 2>/dev/null | grep "$TODAY" | \
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awk '{for(i=1;i<=NF;i++) if($i=="from") print $(i+1)}' | sort | uniq -c | sort -rn | head -2)
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else
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FAIL_IPS=$(journalctl -u ssh --since today -q 2>/dev/null | \
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grep "Failed password\|Invalid user" | \
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awk '{for(i=1;i<=NF;i++) if($i=="from") print $(i+1)}' | sort | uniq -c | sort -rn | head -2)
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fi
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[[ -n "$FAIL_IPS" ]] && echo "$FAIL_IPS" | while read COUNT SRCIP; do
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echo -e " ${RED}✘${RESET} ${DIM}failed${RESET} sshd ${RED}$SRCIP${RESET} (×${COUNT} today)"
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done
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# ── Docker Containers ─────────────────────────────────────────────────────────
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if command -v docker &>/dev/null && docker info &>/dev/null 2>&1; then
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line "Docker"
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CONTAINER_COUNT=$(docker ps -aq | wc -l)
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if [[ $CONTAINER_COUNT -eq 0 ]]; then
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echo -e " ${DIM}no containers${RESET}"
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else
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docker ps -a --format "{{.Names}}\t{{.Status}}\t{{.Ports}}" | \
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while IFS=$'\t' read -r NAME STATUS PORTS; do
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# Condense ports to just host-side port numbers
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SHORT_PORTS=$(echo "$PORTS" | grep -oP '0\.0\.0\.0:\K[0-9]+(?=->)' | sort -un | tr '\n' ',' | sed 's/,$//')
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[[ -n "$SHORT_PORTS" ]] && PORT_STR=" ${DIM}:${SHORT_PORTS}${RESET}" || PORT_STR=""
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if echo "$STATUS" | grep -q "^Up"; then
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UPFOR=$(echo "$STATUS" | sed 's/Up //' | sed 's/ (.*//')
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if echo "$STATUS" | grep -qE "Up [0-9]+ seconds?|Up [0-9]+ minutes?|Up 1 hour"; then
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echo -e " ${YELLOW}●${RESET} ${BOLD}${NAME}${RESET}${PORT_STR} ${YELLOW}restarted recently${RESET}"
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else
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echo -e " ${GREEN}●${RESET} ${BOLD}${NAME}${RESET}${PORT_STR} ${DIM}up ${UPFOR}${RESET}"
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fi
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else
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EXITED=$(echo "$STATUS" | sed 's/Exited ([0-9]*) //')
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echo -e " ${RED}●${RESET} ${BOLD}${NAME}${RESET} ${RED}exited ${EXITED}${RESET}"
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fi
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done
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# Image ages — one line each, inline after containers
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echo -e " ${DIM}images:${RESET}"
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docker images --format "{{.Repository}}:{{.Tag}}\t{{.CreatedSince}}" 2>/dev/null | \
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grep -v "<none>" | head -5 | \
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while IFS=$'\t' read -r IMAGE AGO; do
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if echo "$AGO" | grep -qE "months? ago|years? ago"; then
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echo -e " ${DIM}${IMAGE}${RESET} ${YELLOW}${AGO}${RESET}"
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else
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echo -e " ${DIM}${IMAGE} ${AGO}${RESET}"
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fi
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done
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fi
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fi
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# ── System Updates ────────────────────────────────────────────────────────────
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line "Updates"
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if command -v apt &>/dev/null; then
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UPGRADABLE_LIST=$(apt list --upgradable 2>/dev/null | grep -v "^Listing")
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UPGRADABLE=$(echo "$UPGRADABLE_LIST" | grep -c '/' || true)
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SECURITY=$(echo "$UPGRADABLE_LIST" | grep -ic 'security' || true)
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STANDARD=$((UPGRADABLE - SECURITY))
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APT_STAMP=/var/lib/apt/periodic/update-success-stamp
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LAST_UPDATE=$([[ -f $APT_STAMP ]] && stat -c %y "$APT_STAMP" 2>/dev/null | cut -d' ' -f1 || echo "unknown")
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if [[ $UPGRADABLE -eq 0 ]]; then
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echo -e " ${GREEN}up to date${RESET} ${DIM}checked ${LAST_UPDATE}${RESET}"
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else
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[[ $SECURITY -gt 0 ]] \
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&& echo -e " ${RED}! ${SECURITY} security${RESET} ${DIM}${STANDARD} standard checked ${LAST_UPDATE}${RESET}" \
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|| echo -e " ${DIM}${STANDARD} standard updates checked ${LAST_UPDATE}${RESET}"
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fi
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fi
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echo ""
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