pdfinfo.cam-pdf: 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/pdfinfo.cam-pdf - from package: libcam-pdf-perl

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

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