ecaccess-gateway-connected: 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/ecaccess-gateway-connected - from package: ecaccess

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

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