ctpp2c: 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/ctpp2c - from package: ctpp2-utils

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

Error in other languages:
ctpp2c: bevel nie gevind nie
ctpp2c: comandă negăsită
ctpp2c: comando não encontrado
ctpp2c: commande introuvable
ctpp2c: command not found
ctpp2c: käsku ei ole
ctpp2c: không tìm thấy lệnh
ctpp2c: komanda nerasta
ctpp2c: Kommando nicht gefunden.
ctpp2c: kommandot finns inte
ctpp2c: komut yok
ctpp2c: nie znaleziono polecenia
ctpp2c: níor aimsíodh an t-ordú
ctpp2c: no se encontró la orden
ctpp2c: no s'ha trobat l'ordre
ctpp2c: opdracht niet gevonden
ctpp2c: parancs nem található
ctpp2c: perintah tidak ditemukan
ctpp2c: príkaz nenájdený
ctpp2c: příkaz nenalezen
ctpp2c: команда не найдена
ctpp2c: командата не е открита
ctpp2c: 命令找不到
ctpp2c: コマンドが見つかりません