pfsout: 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
/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/pfsout - from package: pfstools

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