oldrdist: 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/oldrdist - from package: rdist

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

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