tcode: 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/tcode - from package: emboss

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

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