ocrfeeder-cli: command not found

Have You tried accessing the binary with the full path?

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/ocrfeeder-cli - from package: ocrfeeder

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