z88v: 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/z88v - from package: z88

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

Error in other languages:
z88v: bevel nie gevind nie
z88v: comandă negăsită
z88v: comando não encontrado
z88v: commande introuvable
z88v: command not found
z88v: käsku ei ole
z88v: không tìm thấy lệnh
z88v: komanda nerasta
z88v: Kommando nicht gefunden.
z88v: kommandot finns inte
z88v: komut yok
z88v: nie znaleziono polecenia
z88v: níor aimsíodh an t-ordú
z88v: no se encontró la orden
z88v: no s'ha trobat l'ordre
z88v: opdracht niet gevonden
z88v: parancs nem található
z88v: perintah tidak ditemukan
z88v: príkaz nenájdený
z88v: příkaz nenalezen
z88v: команда не найдена
z88v: командата не е открита
z88v: 命令找不到
z88v: コマンドが見つかりません