razor-notificationd: 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-notificationd - from package: razorqt-notifications

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

On Debian possible default full paths are:

/usr/bin/razor-notificationd - from package: razorqt-notificationd

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

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