navit: 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/navit - from package: navit

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

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