argonaut-ldap2zone: 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

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/sbin/argonaut-ldap2zone - from package: argonaut-ldap2zone

You may install the required package with command apt-get install {package}
Error in other languages:
argonaut-ldap2zone: bevel nie gevind nie
argonaut-ldap2zone: comandă negăsită
argonaut-ldap2zone: comando não encontrado
argonaut-ldap2zone: commande introuvable
argonaut-ldap2zone: command not found
argonaut-ldap2zone: käsku ei ole
argonaut-ldap2zone: không tìm thấy lệnh
argonaut-ldap2zone: komanda nerasta
argonaut-ldap2zone: Kommando nicht gefunden.
argonaut-ldap2zone: kommandot finns inte
argonaut-ldap2zone: komut yok
argonaut-ldap2zone: nie znaleziono polecenia
argonaut-ldap2zone: níor aimsíodh an t-ordú
argonaut-ldap2zone: no se encontró la orden
argonaut-ldap2zone: no s'ha trobat l'ordre
argonaut-ldap2zone: opdracht niet gevonden
argonaut-ldap2zone: parancs nem található
argonaut-ldap2zone: perintah tidak ditemukan
argonaut-ldap2zone: príkaz nenájdený
argonaut-ldap2zone: příkaz nenalezen
argonaut-ldap2zone: команда не найдена
argonaut-ldap2zone: командата не е открита
argonaut-ldap2zone: 命令找不到
argonaut-ldap2zone: コマンドが見つかりません