ayttm: command not found

Have You tried accessing the binary with the full path?

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/ayttm - from package: ayttm

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