parrot-blizkost: 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/parrot-blizkost - from package: rakudo-star

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

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