tartool: 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/tartool - from package: zbackup

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

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