ppltotf: 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/ppltotf - from package: texlive-binaries

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

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