ebrefile: 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/ebrefile - from package: eb

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

On Debian possible default full paths are:

/usr/bin/ebrefile - from package: eb-utils

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

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