bjam: 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/bjam - from package: libboost1.55-tools-dev

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

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