tload: 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/tload - from package: procps

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

On Debian possible default full paths are:

/usr/bin/tload - from package: procps

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

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