atmswitch: 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/atmswitch - from package: atm-tools

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

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