wseventmgr: 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/wseventmgr - from package: wsmancli

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

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