zinnia: 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/zinnia - from package: zinnia-utils

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

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