dish: 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/dish - from package: dish

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

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