maf-swap: 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/maf-swap - from package: last-align

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

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