eric: 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/eric - from package: eric

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

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