pbc_dump: 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 CentOS possible default full paths are:

/usr/bin/pbc_dump - from package: parrot-devel

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/pbc_dump - from package: parrot-devel

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

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