mini_epn_icinga: 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/mini_epn_icinga - from package: icinga-dbg

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

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