aevol_propagate: 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/aevol_propagate - from package: aevol

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

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