rhn-profile-sync: 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/sbin/rhn-profile-sync - from package: rhn-client-tools

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

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