itpp-config: 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

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/itpp-config - from package: libitpp-dev

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