krandrstartup: 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/krandrstartup - from package: kde-workspace-randr

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

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