acpidump-acpica: 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/bin/acpidump-acpica - from package: acpica-tools

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

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