xcmsdb: 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/xcmsdb - from package: x11-xserver-utils

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

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