ldap2fai: 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/ldap2fai - from package: argonaut-fai-nfsroot
/usr/sbin/ldap2fai - from package: goto-fai

You may install the required package with command apt-get install {package}
Error in other languages:
ldap2fai: bevel nie gevind nie
ldap2fai: comandă negăsită
ldap2fai: comando não encontrado
ldap2fai: commande introuvable
ldap2fai: command not found
ldap2fai: käsku ei ole
ldap2fai: không tìm thấy lệnh
ldap2fai: komanda nerasta
ldap2fai: Kommando nicht gefunden.
ldap2fai: kommandot finns inte
ldap2fai: komut yok
ldap2fai: nie znaleziono polecenia
ldap2fai: níor aimsíodh an t-ordú
ldap2fai: no se encontró la orden
ldap2fai: no s'ha trobat l'ordre
ldap2fai: opdracht niet gevonden
ldap2fai: parancs nem található
ldap2fai: perintah tidak ditemukan
ldap2fai: príkaz nenájdený
ldap2fai: příkaz nenalezen
ldap2fai: команда не найдена
ldap2fai: командата не е открита
ldap2fai: 命令找不到
ldap2fai: コマンドが見つかりません