maf-join: 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-join - from package: last-align

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

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