ldbadd: command not found

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/bin/ldbadd - from package: ldb-tools

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

On Debian possible default full paths are:

/usr/bin/ldbadd - from package: ldb-tools

You may install the required package with command apt-get install {package}

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