zzat: 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/zzat - from package: zzuf

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

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