razor-appswitcher: 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-appswitcher - from package: razorqt-appswitcher

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

On Debian possible default full paths are:

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

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

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