tryton: 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 CentOS possible default full paths are:

/usr/bin/tryton - from package: tryton

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/tryton - from package: tryton-client

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

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