febootstrap3: 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/febootstrap3 - from package: febootstrap

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

Error in other languages:
febootstrap3: bevel nie gevind nie
febootstrap3: comandă negăsită
febootstrap3: comando não encontrado
febootstrap3: commande introuvable
febootstrap3: command not found
febootstrap3: käsku ei ole
febootstrap3: không tìm thấy lệnh
febootstrap3: komanda nerasta
febootstrap3: Kommando nicht gefunden.
febootstrap3: kommandot finns inte
febootstrap3: komut yok
febootstrap3: nie znaleziono polecenia
febootstrap3: níor aimsíodh an t-ordú
febootstrap3: no se encontró la orden
febootstrap3: no s'ha trobat l'ordre
febootstrap3: opdracht niet gevonden
febootstrap3: parancs nem található
febootstrap3: perintah tidak ditemukan
febootstrap3: príkaz nenájdený
febootstrap3: příkaz nenalezen
febootstrap3: команда не найдена
febootstrap3: командата не е открита
febootstrap3: 命令找不到
febootstrap3: コマンドが見つかりません