tcmt: 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/tcmt - from package: tcm

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