carbon-list: 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/carbon-list - from package: carbonate

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

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