tryto: 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/tryto - from package: socklog

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

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