condor_kbdd: 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/sbin/condor_kbdd - from package: condor-kbdd

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

On Debian possible default full paths are:

/usr/sbin/condor_kbdd - from package: htcondor

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

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