pilot-dedupe: 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-dedupe - from package: pilot-link

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

On Debian possible default full paths are:

/usr/bin/pilot-dedupe - from package: pilot-link

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

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