rewritepdf: 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/rewritepdf - from package: libcam-pdf-perl

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

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