atmloop: 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/atmloop - from package: atm-tools

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

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