dh_pangomodules: 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/dh_pangomodules - from package: libpango1.0-dev

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

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