etm: 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/etm - from package: etm

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