tk707: 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/tk707 - from package: tk707

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

Error in other languages:
tk707: bevel nie gevind nie
tk707: comandă negăsită
tk707: comando não encontrado
tk707: commande introuvable
tk707: command not found
tk707: käsku ei ole
tk707: không tìm thấy lệnh
tk707: komanda nerasta
tk707: Kommando nicht gefunden.
tk707: kommandot finns inte
tk707: komut yok
tk707: nie znaleziono polecenia
tk707: níor aimsíodh an t-ordú
tk707: no se encontró la orden
tk707: no s'ha trobat l'ordre
tk707: opdracht niet gevonden
tk707: parancs nem található
tk707: perintah tidak ditemukan
tk707: príkaz nenájdený
tk707: příkaz nenalezen
tk707: команда не найдена
tk707: командата не е открита
tk707: 命令找不到
tk707: コマンドが見つかりません