citygmltest: 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/citygmltest - from package: libcitygml0-bin

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

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