pdf270: 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/pdf270 - from package: pdfjam

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

On Debian possible default full paths are:

/usr/bin/pdf270 - from package: texlive-extra-utils

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

Error in other languages:
pdf270: bevel nie gevind nie
pdf270: comandă negăsită
pdf270: comando não encontrado
pdf270: commande introuvable
pdf270: command not found
pdf270: käsku ei ole
pdf270: không tìm thấy lệnh
pdf270: komanda nerasta
pdf270: Kommando nicht gefunden.
pdf270: kommandot finns inte
pdf270: komut yok
pdf270: nie znaleziono polecenia
pdf270: níor aimsíodh an t-ordú
pdf270: no se encontró la orden
pdf270: no s'ha trobat l'ordre
pdf270: opdracht niet gevonden
pdf270: parancs nem található
pdf270: perintah tidak ditemukan
pdf270: príkaz nenájdený
pdf270: příkaz nenalezen
pdf270: команда не найдена
pdf270: командата не е открита
pdf270: 命令找不到
pdf270: コマンドが見つかりません