razor-about: 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-about - from package: razorqt-about

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

On Debian possible default full paths are:

/usr/bin/razor-about - from package: razorqt-session

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

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