r2w: 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/r2w - from package: rest2web

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

Error in other languages:
r2w: bevel nie gevind nie
r2w: comandă negăsită
r2w: comando não encontrado
r2w: commande introuvable
r2w: command not found
r2w: käsku ei ole
r2w: không tìm thấy lệnh
r2w: komanda nerasta
r2w: Kommando nicht gefunden.
r2w: kommandot finns inte
r2w: komut yok
r2w: nie znaleziono polecenia
r2w: níor aimsíodh an t-ordú
r2w: no se encontró la orden
r2w: no s'ha trobat l'ordre
r2w: opdracht niet gevonden
r2w: parancs nem található
r2w: perintah tidak ditemukan
r2w: príkaz nenájdený
r2w: příkaz nenalezen
r2w: команда не найдена
r2w: командата не е открита
r2w: 命令找不到
r2w: コマンドが見つかりません