meep-lam4: 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/meep-lam4 - from package: meep-lam4

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

Error in other languages:
meep-lam4: bevel nie gevind nie
meep-lam4: comandă negăsită
meep-lam4: comando não encontrado
meep-lam4: commande introuvable
meep-lam4: command not found
meep-lam4: käsku ei ole
meep-lam4: không tìm thấy lệnh
meep-lam4: komanda nerasta
meep-lam4: Kommando nicht gefunden.
meep-lam4: kommandot finns inte
meep-lam4: komut yok
meep-lam4: nie znaleziono polecenia
meep-lam4: níor aimsíodh an t-ordú
meep-lam4: no se encontró la orden
meep-lam4: no s'ha trobat l'ordre
meep-lam4: opdracht niet gevonden
meep-lam4: parancs nem található
meep-lam4: perintah tidak ditemukan
meep-lam4: príkaz nenájdený
meep-lam4: příkaz nenalezen
meep-lam4: команда не найдена
meep-lam4: командата не е открита
meep-lam4: 命令找不到
meep-lam4: コマンドが見つかりません