uptftopl: 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/uptftopl - from package: texlive-binaries

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

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