reload: 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/reload - from package: upstart

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

On Debian possible default full paths are:

/sbin/reload - from package: upstart

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

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