amtoc: 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 CentOS possible default full paths are:

/usr/sbin/amtoc - from package: amanda-server

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/amtoc - from package: amanda-server

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

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