wvVersion: 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/wvVersion - from package: wv

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

On Debian possible default full paths are:

/usr/bin/wvVersion - from package: wv

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

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