crushtool: 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/crushtool - from package: ceph

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

On Debian possible default full paths are:

/usr/bin/crushtool - from package: ceph

You may install the required package with command apt-get install {package}

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