desproxy-socksserver: 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/desproxy-socksserver - from package: desproxy

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

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