thermald: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/sbin/thermald - from package: thermald

You may install the required package with command apt-get install {package}

Error in other languages:
thermald: bevel nie gevind nie
thermald: comandă negăsită
thermald: comando não encontrado
thermald: commande introuvable
thermald: command not found
thermald: käsku ei ole
thermald: không tìm thấy lệnh
thermald: komanda nerasta
thermald: Kommando nicht gefunden.
thermald: kommandot finns inte
thermald: komut yok
thermald: nie znaleziono polecenia
thermald: níor aimsíodh an t-ordú
thermald: no se encontró la orden
thermald: no s'ha trobat l'ordre
thermald: opdracht niet gevonden
thermald: parancs nem található
thermald: perintah tidak ditemukan
thermald: príkaz nenájdený
thermald: příkaz nenalezen
thermald: команда не найдена
thermald: командата не е открита
thermald: 命令找不到
thermald: コマンドが見つかりません