m16c-flash: 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/m16c-flash - from package: m16c-flash

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

Error in other languages:
m16c-flash: bevel nie gevind nie
m16c-flash: comandă negăsită
m16c-flash: comando não encontrado
m16c-flash: commande introuvable
m16c-flash: command not found
m16c-flash: käsku ei ole
m16c-flash: không tìm thấy lệnh
m16c-flash: komanda nerasta
m16c-flash: Kommando nicht gefunden.
m16c-flash: kommandot finns inte
m16c-flash: komut yok
m16c-flash: nie znaleziono polecenia
m16c-flash: níor aimsíodh an t-ordú
m16c-flash: no se encontró la orden
m16c-flash: no s'ha trobat l'ordre
m16c-flash: opdracht niet gevonden
m16c-flash: parancs nem található
m16c-flash: perintah tidak ditemukan
m16c-flash: príkaz nenájdený
m16c-flash: příkaz nenalezen
m16c-flash: команда не найдена
m16c-flash: командата не е открита
m16c-flash: 命令找不到
m16c-flash: コマンドが見つかりません