PTPredict: 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/PTPredict - from package: topp

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

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