amvault: 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/amvault - from package: amanda-server

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

On Debian possible default full paths are:

/usr/sbin/amvault - from package: amanda-common

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

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