osmo: 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/osmo - from package: osmo

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