antpm-downloader: 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 Debian possible default full paths are:

/usr/bin/antpm-downloader - from package: antpm

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

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