rep-config: 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/rep-config - from package: librep-dev

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

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