pilot: 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/pilot - from package: alpine

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

On Debian possible default full paths are:

/usr/bin/pilot - from package: pilot

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

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