openwsmand: command not found

Have You tried accessing the binary with the full path?

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/openwsmand - from package: openwsman-server

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