tart: command not found

Have You tried accessing the binary with the full path?

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/tart - from package: tart

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