buildslave: 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 Debian possible default full paths are:

/usr/bin/buildslave - from package: buildbot-slave

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

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