radsecproxy-hash: 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/sbin/radsecproxy-hash - from package: radsecproxy

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

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