epylint: 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/epylint - from package: pylint

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

On Debian possible default full paths are:

/usr/bin/epylint - from package: pylint

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

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