uum: 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/uum - from package: freewnn-jserver

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

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