spacewalk-pylint: 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

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/spacewalk-pylint - from package: spacewalk-pylint

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