tryton-neso: 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/tryton-neso - from package: tryton-neso

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

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