em3.features: 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"

Error in other languages:
em3.features: bevel nie gevind nie
em3.features: comandă negăsită
em3.features: comando não encontrado
em3.features: commande introuvable
em3.features: command not found
em3.features: käsku ei ole
em3.features: không tìm thấy lệnh
em3.features: komanda nerasta
em3.features: Kommando nicht gefunden.
em3.features: kommandot finns inte
em3.features: komut yok
em3.features: nie znaleziono polecenia
em3.features: níor aimsíodh an t-ordú
em3.features: no se encontró la orden
em3.features: no s'ha trobat l'ordre
em3.features: opdracht niet gevonden
em3.features: parancs nem található
em3.features: perintah tidak ditemukan
em3.features: príkaz nenájdený
em3.features: příkaz nenalezen
em3.features: команда не найдена
em3.features: командата не е открита
em3.features: 命令找不到
em3.features: コマンドが見つかりません