carbon-path: 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 CentOS possible default full paths are:

/usr/bin/carbon-path - from package: carbonate

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