tumgreyspf: 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/tumgreyspf - from package: tumgreyspf

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