epspdf: 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/epspdf - from package: texlive-pictures

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

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