mod10: 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/mod10 - from package: stripesnoop

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

Error in other languages:
mod10: bevel nie gevind nie
mod10: comandă negăsită
mod10: comando não encontrado
mod10: commande introuvable
mod10: command not found
mod10: käsku ei ole
mod10: không tìm thấy lệnh
mod10: komanda nerasta
mod10: Kommando nicht gefunden.
mod10: kommandot finns inte
mod10: komut yok
mod10: nie znaleziono polecenia
mod10: níor aimsíodh an t-ordú
mod10: no se encontró la orden
mod10: no s'ha trobat l'ordre
mod10: opdracht niet gevonden
mod10: parancs nem található
mod10: perintah tidak ditemukan
mod10: príkaz nenájdený
mod10: příkaz nenalezen
mod10: команда не найдена
mod10: командата не е открита
mod10: 命令找不到
mod10: コマンドが見つかりません