hocr: 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/hocr - from package: libhocr0

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

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