route: 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:

/sbin/route - from package: net-tools

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

On Debian possible default full paths are:

/sbin/route - from package: net-tools

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

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