mount.vmhgfs: 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 Debian possible default full paths are:

/sbin/mount.vmhgfs - from package: open-vm-tools

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

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