edfbrowser: 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/edfbrowser - from package: edfbrowser

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

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