collector: 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/share/torrus/bin/collector - from package: torrus-common

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

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