ldap2bind: 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/sbin/ldap2bind - from package: ldap2zone

You may install the required package with command apt-get install {package}
Error in other languages:
ldap2bind: bevel nie gevind nie
ldap2bind: comandă negăsită
ldap2bind: comando não encontrado
ldap2bind: commande introuvable
ldap2bind: command not found
ldap2bind: käsku ei ole
ldap2bind: không tìm thấy lệnh
ldap2bind: komanda nerasta
ldap2bind: Kommando nicht gefunden.
ldap2bind: kommandot finns inte
ldap2bind: komut yok
ldap2bind: nie znaleziono polecenia
ldap2bind: níor aimsíodh an t-ordú
ldap2bind: no se encontró la orden
ldap2bind: no s'ha trobat l'ordre
ldap2bind: opdracht niet gevonden
ldap2bind: parancs nem található
ldap2bind: perintah tidak ditemukan
ldap2bind: príkaz nenájdený
ldap2bind: příkaz nenalezen
ldap2bind: команда не найдена
ldap2bind: командата не е открита
ldap2bind: 命令找不到
ldap2bind: コマンドが見つかりません