razor-revoke: 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/razor-revoke - from package: perl-Razor-Agent

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

On Debian possible default full paths are:

/usr/bin/razor-revoke - from package: razor

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

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