vgs: 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:

/sbin/vgs - from package: lvm2

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

On Debian possible default full paths are:

/sbin/vgs - from package: lvm2

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

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