RaspberryPI Status on ssh connect

.bash_profile

#!/bin/bash

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

# Load averages
read one five fifteen _ < /proc/loadavg

# Memory
MEM_FREE=$(awk '/MemAvailable:/ {print $2}' /proc/meminfo)
MEM_TOTAL=$(awk '/MemTotal:/ {print $2}' /proc/meminfo)

# Running processes
PROCESSES=$(ps -e --no-headers | wc -l)

# CPU temperature
if command -v vcgencmd >/dev/null 2>&1; then
    CPU_TEMP=$(vcgencmd measure_temp | cut -d= -f2)
else
    CPU_TEMP="N/A"
fi

# Disk space
DISK_SPACE=$(df -h / | awk 'NR==2 {print $4 " of " $2}')

# IP addresses
LOCAL_IP=$(hostname -I | awk '{print $1}')

if command -v curl >/dev/null 2>&1; then
    PUBLIC_IP=$(curl -4 -fs --max-time 3 https://api.ipify.org 2>/dev/null)
elif command -v wget >/dev/null 2>&1; then
    PUBLIC_IP=$(wget -qO- https://api.ipify.org 2>/dev/null)
else
    PUBLIC_IP="N/A"
fi

PUBLIC_IP=${PUBLIC_IP:-N/A}

# Output
echo "$(tput setaf 2)
   .~~.   .~~.    $(date '+%A, %e %B %Y, %X %Z')
  '. \ ' ' / .'   $(uname -srmo)$(tput setaf 1)
   .~ .~~~..~.
  : .~.'~'.~. :   Uptime.............: ${UPTIME}
 ~ (   ) (   ) ~  Memory.............: ${MEM_FREE}kB (Available) / ${MEM_TOTAL}kB (Total)
( : '~'.~.'~' : ) Load Averages......: ${one}, ${five}, ${fifteen} (1, 5, 15 min)
 ~ .~ (   ) ~. ~  Running Processes..: ${PROCESSES}
  (  : '~' :  )   CPU Temperature....: ${CPU_TEMP}
   '~ .~~~. ~'    Free Disk Space....: ${DISK_SPACE}
       '~'        IP Addresses.......: ${LOCAL_IP} and ${PUBLIC_IP}
$(tput sgr0)"

# Load user's bash configuration
if [ -f ~/.bashrc ]; then
    source ~/.bashrc
fi

.bash_profile-linux

#!/bin/bash
# Login banner for a regular Linux machine (SSH or local login)
# Adapted from the classic Raspberry Pi ".bash_profile" banner:
# - swaps vcgencmd (RPi-only) for a generic /sys/class/thermal read
# - detects the root filesystem instead of assuming /dev/root

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

# get the load averages
read one five fifteen rest < /proc/loadavg

# CPU temperature (generic - not every machine exposes this, especially VMs/CI hosts)
CPU_TEMP=""

# 1) lm-sensors, if installed
if command -v sensors >/dev/null 2>&1; then
    CPU_TEMP=$(sensors 2>/dev/null | grep -m1 -E 'Package id 0|Tctl|Tdie|Composite|CPU' | grep -oE '[+-][0-9]+\.[0-9]+°C' | head -1)
fi

# 2) any thermal zone under /sys, not just zone0 (order/availability varies by kernel)
if [ -z "$CPU_TEMP" ]; then
    for zone in /sys/class/thermal/thermal_zone*/temp; do
        [ -f "$zone" ] || continue
        raw=$(cat "$zone" 2>/dev/null)
        [ -n "$raw" ] && [ "$raw" -gt 0 ] 2>/dev/null || continue
        CPU_TEMP=$(awk -v t="$raw" 'BEGIN{printf "+%.1f°C", t/1000}')
        break
    done
fi

# 3) hwmon coretemp/k10temp, if present (common on bare-metal servers, no lm-sensors installed)
if [ -z "$CPU_TEMP" ]; then
    for hwmon in /sys/class/hwmon/hwmon*/temp1_input; do
        [ -f "$hwmon" ] || continue
        raw=$(cat "$hwmon" 2>/dev/null)
        [ -n "$raw" ] && [ "$raw" -gt 0 ] 2>/dev/null || continue
        CPU_TEMP=$(awk -v t="$raw" 'BEGIN{printf "+%.1f°C", t/1000}')
        break
    done
fi

CPU_TEMP=${CPU_TEMP:-"n/a (no sensor exposed - common on VMs/CI hosts)"}

# memory, human readable (kB -> GiB, one decimal place)
MEM_AVAIL=$(awk '/MemAvailable/ {printf "%.1fG", $2/1024/1024}' /proc/meminfo)
MEM_TOTAL=$(awk '/MemTotal/ {printf "%.1fG", $2/1024/1024}' /proc/meminfo)

# root filesystem free space (works whether root is /dev/sda1, /dev/nvme0n1p2, etc.)
ROOT_FS=$(df -Ph / | awk 'NR==2 {print $4 " of " $2}')

# public IP (best effort, times out fast so it doesn't hang your login)
PUBLIC_IP=$(curl -s --max-time 2 https://icanhazip.com 2>/dev/null || echo "n/a")

GREEN="$(tput setaf 2)"
RED="$(tput setaf 1)"
RESET="$(tput sgr0)"
ART_WIDTH=19   # fixed column width for the face art, so labels always line up

echo "$GREEN"
printf "%-${ART_WIDTH}s%s\n" "  .~~.   .~~.    " "$(date +"%A, %e %B %Y, %X %Z")"
printf "%-${ART_WIDTH}s%s${RED}\n" " '. \\ ' ' / .'   " "$(uname -srmo)"
printf "%s\n" "  .~ .~~~..~."
printf "%-${ART_WIDTH}s%s\n" " : .~.'~'.~. :   " "Uptime.............: ${UPTIME}"
printf "%-${ART_WIDTH}s%s\n" "~ (   ) (   ) ~  " "Memory.............: ${MEM_AVAIL} (Available) / ${MEM_TOTAL} (Total)"
printf "%-${ART_WIDTH}s%s\n" "( : '~'.~.'~' : )" "Load Averages......: ${one}, ${five}, ${fifteen} (1, 5, 15 min)"
printf "%-${ART_WIDTH}s%s\n" " ~ .~ (   ) ~. ~ " "Running Processes..: $(ps ax | wc -l | tr -d " ")"
printf "%-${ART_WIDTH}s%s\n" "  ( : '~' : )    " "CPU Temperature....: ${CPU_TEMP}"
printf "%-${ART_WIDTH}s%s\n" "   '~ .~~~. ~'   " "Free Disk Space....: ${ROOT_FS}"
printf "%-${ART_WIDTH}s%s\n" "       '~'       " "IP Addresses.......: $(hostname -I | /usr/bin/cut -d " " -f 1) and ${PUBLIC_IP}"
echo "$RESET"

# Include .bashrc
if [ -f ~/.bashrc ]; then
    source ~/.bashrc
fi