sphinx_pitch: 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/sphinx_pitch - from package: sphinxbase-utils

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

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