uapevent: 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/uapevent - from package: uapevent

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

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