sam: 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/lib/plan9/bin/sam - from package: 9base

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

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