vspace: 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:

/usr/sbin/vspace - from package: util-vserver

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

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