reptyr: 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/reptyr - from package: reptyr

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

On Debian possible default full paths are:

/usr/bin/reptyr - from package: reptyr

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

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