trpg: 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/trpg - from package: tcm

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