predict: 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/predict - from package: predict

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

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