ghoz: command not found

Have You tried accessing the binary with the full path?

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/ghoz - from package: hoz-gui

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