smbldap-userdel: 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 CentOS possible default full paths are:

/usr/sbin/smbldap-userdel - from package: smbldap-tools

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/sbin/smbldap-userdel - from package: smbldap-tools

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