eqn2eps: 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/eqn2eps - from package: mgp

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

Error in other languages:
eqn2eps: bevel nie gevind nie
eqn2eps: comandă negăsită
eqn2eps: comando não encontrado
eqn2eps: commande introuvable
eqn2eps: command not found
eqn2eps: käsku ei ole
eqn2eps: không tìm thấy lệnh
eqn2eps: komanda nerasta
eqn2eps: Kommando nicht gefunden.
eqn2eps: kommandot finns inte
eqn2eps: komut yok
eqn2eps: nie znaleziono polecenia
eqn2eps: níor aimsíodh an t-ordú
eqn2eps: no se encontró la orden
eqn2eps: no s'ha trobat l'ordre
eqn2eps: opdracht niet gevonden
eqn2eps: parancs nem található
eqn2eps: perintah tidak ditemukan
eqn2eps: príkaz nenájdený
eqn2eps: příkaz nenalezen
eqn2eps: команда не найдена
eqn2eps: командата не е открита
eqn2eps: 命令找不到
eqn2eps: コマンドが見つかりません