vmtouch: 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/sbin/vmtouch - from package: vmtouch

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

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