securetty: 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/securetty - from package: initscripts

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

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