unutf: 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/lib/plan9/bin/unutf - from package: 9base

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

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