pgfouine: 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/pgfouine - from package: pgfouine

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

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