updateLysKOM: 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/updateLysKOM - from package: lyskom-server

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

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