freight-clear-cache: 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/freight-clear-cache - from package: freight

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

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