epirunner: 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 Debian possible default full paths are:

/usr/bin/epirunner - from package: epigrass

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

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