docgenerator: 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/docgenerator - from package: generatorrunner

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

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