pronto2lirc: 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/pronto2lirc - from package: lirc

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

Error in other languages:
pronto2lirc: bevel nie gevind nie
pronto2lirc: comandă negăsită
pronto2lirc: comando não encontrado
pronto2lirc: commande introuvable
pronto2lirc: command not found
pronto2lirc: käsku ei ole
pronto2lirc: không tìm thấy lệnh
pronto2lirc: komanda nerasta
pronto2lirc: Kommando nicht gefunden.
pronto2lirc: kommandot finns inte
pronto2lirc: komut yok
pronto2lirc: nie znaleziono polecenia
pronto2lirc: níor aimsíodh an t-ordú
pronto2lirc: no se encontró la orden
pronto2lirc: no s'ha trobat l'ordre
pronto2lirc: opdracht niet gevonden
pronto2lirc: parancs nem található
pronto2lirc: perintah tidak ditemukan
pronto2lirc: príkaz nenájdený
pronto2lirc: příkaz nenalezen
pronto2lirc: команда не найдена
pronto2lirc: командата не е открита
pronto2lirc: 命令找不到
pronto2lirc: コマンドが見つかりません