fakeroot-ng: 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/fakeroot-ng - from package: fakeroot-ng

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

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