sys_basher_disable_oom: command not found

Have You tried accessing the binary with the full path?

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH

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/sys_basher_disable_oom - from package: sys_basher

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