trytond: 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/trytond - from package: trytond

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

On Debian possible default full paths are:

/usr/bin/trytond - from package: tryton-server

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

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