micro_proxy: 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

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/sbin/micro_proxy - from package: micro-proxy

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