sma: command not found

Have You tried accessing the binary with the full path?

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/sma - from package: sma

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