tcltk-depends: 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/tcltk-depends - from package: tcl-dev

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

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