Watch Your Temps

English • Русский

Why this exists / Зачем это нужно

EN: I needed a quick, readable temperature view for a home Proxmox server. The raw outputs of sensors and smartctl were noisy and hard to scan in watch, so I made a one‑liner that renders a compact, colorized table that’s easy to scan at a glance.

RU: Мне нужен был быстрый и наглядный мониторинг температур на домашнем сервере Proxmox. Штатные выводы sensors и smartctl перегружены и плохо читаются в watch, поэтому я сделал однострочник, который выводит компактную цветную таблицу, понятную с первого взгляда.

Colorized CPU & SSD temperatures in your terminal (lm-sensors + smartctl) via watch. Zero install, one‑liner friendly.

Цветной и удобочитаемый вывод температур CPU и SSD в терминале (lm-sensors + smartctl) через watch. Не требует установки скриптов — один однострочник.

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English

Features

• Compact, aligned table for CPU (Package & per‑core) and ACPI temp.
• SSD current temperature (SCT), min/max lines preserved.
• Color thresholds: green < warn, yellow ≥ warn, red ≥ crit.
• Pure one‑liner (no files, no functions), works well in tmux / Proxmox shell.

Requirements

• Debian/Ubuntu/Proxmox‑like systems: lm-sensors, smartmontools, bash, perl.

Install dependencies on Debian/Ubuntu/Proxmox with:

sudo apt update && sudo apt install -y lm-sensors smartmontools

Quick start (one‑liner, with degree symbol)

Requires UTF‑8 locale in your terminal (see Troubleshooting below).

watch -c -n1 --no-title bash -lc 'date "+%F %T"; echo "=== CPU ==="; sensors 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''BEGIN{ printf "%-16s %8s %8s %8s\n","Sensor","Temp","High","Crit" } our $in_acpi=0; if(/^Adapter:\s*ACPI interface/){ $in_acpi=1; } elsif(/^$/){ $in_acpi=0; } if( /^(Package id \d+|Core \d+):.*?\+([\d.]+)/ ){ my($n,$t)=($1,$2); my($hi)=/high\s*=\s*\+([\d.]+)/? $1:100; my($cr)=/crit\s*=\s*\+([\d.]+)/? $1:100; my $col = ($t>=95) ? "\e[31m" : ($t>=80) ? "\e[33m" : "\e[32m"; if($n =~ /^Package id/){ $n="CPU Package"; printf "%-16s ${col}\e[1m%6.1f°C\e[0m %7s°C %7s°C\n",$n,$t,$hi,$cr; print "\e[2m──────────────────────────────────────────────\e[0m\n"; } else { printf "%-16s ${col}%6.1f°C\e[0m %7s°C %7s°C\n",$n,$t,$hi,$cr; } } elsif( $in_acpi && /^temp\d+:\s*\+?([\d.]+)/ ){ my $t=$1; my $col = ($t>=75) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-16s ${col}%6.1f°C\e[0m %7s %7s\n","ACPI temp1",$t,"--","--"; }'\''; echo; echo "=== SSD /dev/sda ==="; smartctl -l scttemp /dev/sda 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''if(/Current Temperature:\s+(\d+)/){ my $t=$1; my $col = ($t>=70) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-24s ${col}%5d°C\e[0m\n","Current Temperature:",$t; } elsif(/Power Cycle Min\/Max Temperature:/ || /Lifetime Min\/Max Temperature:/){ print; }'\'''

ASCII fallback (no ° symbol)

If your locale/font doesn’t render °, use the ASCII variant:

watch -c -n1 --no-title bash -lc 'date "+%F %T"; echo "=== CPU ==="; sensors 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''BEGIN{ printf "%-16s %8s %8s %8s\n","Sensor","Temp","High","Crit" } our $in_acpi=0; if(/^Adapter:\s*ACPI interface/){ $in_acpi=1; } elsif(/^$/){ $in_acpi=0; } if( /^(Package id \d+|Core \d+):.*?\+([\d.]+)/ ){ my($n,$t)=($1,$2); my($hi)=/high\s*=\s*\+([\d.]+)/? $1:100; my($cr)=/crit\s*=\s*\+([\d.]+)/? $1:100; my $col = ($t>=95) ? "\e[31m" : ($t>=80) ? "\e[33m" : "\e[32m"; if($n =~ /^Package id/){ $n="CPU Package"; printf "%-16s ${col}\e[1m%6.1fC\e[0m %7sC %7sC\n",$n,$t,$hi,$cr; print "\e[2m──────────────────────────────────────────────\e[0m\n"; } else { printf "%-16s ${col}%6.1fC\e[0m %7sC %7sC\n",$n,$t,$hi,$cr; } } elsif( $in_acpi && /^temp\d+:\s*\+?([\d.]+)/ ){ my $t=$1; my $col = ($t>=75) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-16s ${col}%6.1fC\e[0m %7s %7s\n","ACPI temp1",$t,"--","--"; }'\''; echo; echo "=== SSD /dev/sda ==="; smartctl -l scttemp /dev/sda 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''if(/Current Temperature:\s+(\d+)/){ my $t=$1; my $col = ($t>=70) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-24s ${col}%5dC\e[0m\n","Current Temperature:",$t; } elsif(/Power Cycle Min\/Max Temperature:/ || /Lifetime Min\/Max Temperature:/){ print; }'\'''

Default thresholds

• CPU: warn 80°C, crit 95°C (color applies to current temp only).
• ACPI: warn 60°C, crit 75°C.
• SSD (SATA): warn 60°C, crit 70°C.

Customize

• Change thresholds inside the one‑liner (the numbers 80/95 and 60/75/70).
• Add NVMe drive: replace the SSD part with smartctl -l scttemp,nvme /dev/nvme0 (some models expose different logs).

Troubleshooting

• Degree symbol not shown / weird characters: ensure UTF‑8 locale and a font with °.

  locale | grep -E 'LANG|LC_CTYPE'
  export LANG=en_US.UTF-8 LC_CTYPE=en_US.UTF-8   # or ru_RU.UTF-8

• No ACPI temp: some platforms don’t expose acpitz; the ACPI line will simply be omitted.

• smartctl shows no SCT: some SSDs lack SCT temperature log; use the device‑specific log or NVMe variant.

Light future plans

If enough people star/use it, I’ll add an optional "full" script with flags (--nvme, --disk, --cpu-warn, etc.), -h help and better autodetection.

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English • Русский

Русский

Возможности

• Компактная таблица CPU (пакет и ядра) + ACPI‑температура.
• Текущая температура SSD (SCT), строки Min/Max сохраняются.
• Цвета: зелёный < warn, жёлтый ≥ warn, красный ≥ crit.
• Чистый однострочник — без файлов и функций, удобно для Proxmox/tmux.

Требования

lm-sensors, smartmontools, bash, perl.

Установите зависимости в Debian/Ubuntu/Proxmox:

sudo apt update && sudo apt install -y lm-sensors smartmontools

Быстрый старт (с символом градуса)

watch -c -n1 --no-title bash -lc 'date "+%F %T"; echo "=== CPU ==="; sensors 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''BEGIN{ printf "%-16s %8s %8s %8s\n","Sensor","Temp","High","Crit" } our $in_acpi=0; if(/^Adapter:\s*ACPI interface/){ $in_acpi=1; } elsif(/^$/){ $in_acpi=0; } if( /^(Package id \d+|Core \d+):.*?\+([\d.]+)/ ){ my($n,$t)=($1,$2); my($hi)=/high\s*=\s*\+([\d.]+)/? $1:100; my($cr)=/crit\s*=\s*\+([\d.]+)/? $1:100; my $col = ($t>=95) ? "\e[31m" : ($t>=80) ? "\e[33m" : "\e[32m"; if($n =~ /^Package id/){ $n="CPU Package"; printf "%-16s ${col}\e[1m%6.1f°C\e[0m %7s°C %7s°C\n",$n,$t,$hi,$cr; print "\e[2m──────────────────────────────────────────────\e[0m\n"; } else { printf "%-16s ${col}%6.1f°C\e[0m %7s°C %7s°C\n",$n,$t,$hi,$cr; } } elsif( $in_acpi && /^temp\d+:\s*\+?([\d.]+)/ ){ my $t=$1; my $col = ($t>=75) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-16s ${col}%6.1f°C\e[0m %7s %7s\n","ACPI temp1",$t,"--","--"; }'\''; echo; echo "=== SSD /dev/sda ==="; smartctl -l scttemp /dev/sda 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''if(/Current Temperature:\s+(\d+)/){ my $t=$1; my $col = ($t>=70) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-24s ${col}%5d°C\e[0m\n","Current Temperature:",$t; } elsif(/Power Cycle Min\/Max Temperature:/ || /Lifetime Min\/Max Temperature:/){ print; }'\'''

ASCII‑вариант (без символа «°»)

watch -c -n1 --no-title bash -lc 'date "+%F %T"; echo "=== CPU ==="; sensors 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''BEGIN{ printf "%-16s %8s %8s %8s\n","Sensor","Temp","High","Crit" } our $in_acpi=0; if(/^Adapter:\s*ACPI interface/){ $in_acpi=1; } elsif(/^$/){ $in_acpi=0; } if( /^(Package id \d+|Core \d+):.*?\+([\d.]+)/ ){ my($n,$t)=($1,$2); my($hi)=/high\s*=\s*\+([\d.]+)/? $1:100; my($cr)=/crit\s*=\s*\+([\d.]+)/? $1:100; my $col = ($t>=95) ? "\e[31m" : ($t>=80) ? "\e[33m" : "\e[32m"; if($n =~ /^Package id/){ $n="CPU Package"; printf "%-16s ${col}\e[1m%6.1fC\e[0m %7sC %7sC\n",$n,$t,$hi,$cr; print "\e[2m──────────────────────────────────────────────\e[0m\n"; } else { printf "%-16s ${col}%6.1fC\e[0m %7sC %7sC\n",$n,$t,$hi,$cr; } } elsif( $in_acpi && /^temp\d+:\s*\+?([\d.]+)/ ){ my $t=$1; my $col = ($t>=75) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-16s ${col}%6.1fC\e[0m %7s %7s\n","ACPI temp1",$t,"--","--"; }'\''; echo; echo "=== SSD /dev/sda ==="; smartctl -l scttemp /dev/sda 2>/dev/null | perl -Mstrict -Mwarnings -ne '\''if(/Current Temperature:\s+(\d+)/){ my $t=$1; my $col = ($t>=70) ? "\e[31m" : ($t>=60) ? "\e[33m" : "\e[32m"; printf "%-24s ${col}%5dC\e[0m\n","Current Temperature:",$t; } elsif(/Power Cycle Min\/Max Temperature:/ || /Lifetime Min\/Max Temperature:/){ print; }'\'''

Пороговые значения по умолчанию

• CPU: предупреждение 80°C, критично 95°C.
• ACPI: предупреждение 60°C, критично 75°C.
• SSD (SATA): предупреждение 60°C, критично 70°C.

Настройка

Правьте числа в однострочнике; для NVMe используйте smartctl -l scttemp,nvme /dev/nvme0.

Устранение неполадок

• Не отображается символ «°» / кракозябры — включите UTF‑8‑локаль и шрифт с символом градуса.

  locale | grep -E 'LANG|LC_CTYPE'
  export LANG=ru_RU.UTF-8 LC_CTYPE=ru_RU.UTF-8  # или en_US.UTF-8

• Нет ACPI‑температуры — платформа может не экспонировать acpitz.

• Нет SCT у SSD — устройство может не поддерживать этот лог; используйте NVMe/вендорные логи.

Небольшие планы

Если инструмент окажется полезным, добавлю опциональную «расширенную» версию с флагами и автодетектом; создайте issue и поставьте ⭐, чтобы это ускорить.

Keywords: lm-sensors, smartctl, terminal, watch, temperatures, Proxmox, Debian, Linux, one-liner