amstatus: 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/amstatus - from package: amanda-server

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

On Debian possible default full paths are:

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

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

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