topal: 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/topal - from package: topal

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

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