ctpp2i: 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/ctpp2i - from package: ctpp2-utils

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

Error in other languages:
ctpp2i: bevel nie gevind nie
ctpp2i: comandă negăsită
ctpp2i: comando não encontrado
ctpp2i: commande introuvable
ctpp2i: command not found
ctpp2i: käsku ei ole
ctpp2i: không tìm thấy lệnh
ctpp2i: komanda nerasta
ctpp2i: Kommando nicht gefunden.
ctpp2i: kommandot finns inte
ctpp2i: komut yok
ctpp2i: nie znaleziono polecenia
ctpp2i: níor aimsíodh an t-ordú
ctpp2i: no se encontró la orden
ctpp2i: no s'ha trobat l'ordre
ctpp2i: opdracht niet gevonden
ctpp2i: parancs nem található
ctpp2i: perintah tidak ditemukan
ctpp2i: príkaz nenájdený
ctpp2i: příkaz nenalezen
ctpp2i: команда не найдена
ctpp2i: командата не е открита
ctpp2i: 命令找不到
ctpp2i: コマンドが見つかりません