ocrad: 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/ocrad - from package: ocrad

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

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