zorpctl: 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/lib/debug/usr/sbin/zorpctl - from package: zorp-dbg
/usr/sbin/zorpctl - from package: zorp

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