taktuk: command not found

Have You tried accessing the binary with the full path?

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/taktuk - from package: taktuk

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