srda-landscape: 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

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/srda-landscape - from package: python-mlpy

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