z88g: command not found

Have You tried accessing the binary with the full path?

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/z88g - from package: z88

You may install the required package with command apt-get install {package}
Error in other languages:
z88g: bevel nie gevind nie
z88g: comandă negăsită
z88g: comando não encontrado
z88g: commande introuvable
z88g: command not found
z88g: käsku ei ole
z88g: không tìm thấy lệnh
z88g: komanda nerasta
z88g: Kommando nicht gefunden.
z88g: kommandot finns inte
z88g: komut yok
z88g: nie znaleziono polecenia
z88g: níor aimsíodh an t-ordú
z88g: no se encontró la orden
z88g: no s'ha trobat l'ordre
z88g: opdracht niet gevonden
z88g: parancs nem található
z88g: perintah tidak ditemukan
z88g: príkaz nenájdený
z88g: příkaz nenalezen
z88g: команда не найдена
z88g: командата не е открита
z88g: 命令找不到
z88g: コマンドが見つかりません