phyutility: 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/phyutility - from package: phyutility

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

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