coax: 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/coax - from package: atlc

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

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