pylint: 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/pylint - from package: pylint

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

On Debian possible default full paths are:

/usr/bin/pylint - from package: pylint

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

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