bogotune: 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/bogotune - from package: bogofilter

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

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