ecamonitor: 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/ecamonitor - from package: ecatools

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

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