transproxy: 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/sbin/transproxy - from package: hunt

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