wstool: 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/wstool - from package: python-wstool

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

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