seaudit: 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/seaudit - from package: setools-gui
/usr/sbin/seaudit - from package: setools-gui

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

On Debian possible default full paths are:

/usr/sbin/seaudit - from package: setools-gui

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

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