freehoo: 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/freehoo - from package: freehoo

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

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