iprop-log: 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/sbin/iprop-log - from package: heimdal-server

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

On Debian possible default full paths are:

/usr/sbin/iprop-log - from package: heimdal-kdc
/usr/lib/debug/usr/sbin/iprop-log - from package: heimdal-dbg

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

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