props: 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/props - from package: xview-clients

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

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