gtkorphan: 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/gtkorphan - from package: gtkorphan

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