PS C:wamp64binapacheapache2.4.23bin> ab -t 10 -c 10 http://google.com
ab : The term 'ab' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spel
and try again.
At line:1 char:1
+ ab -t 10 -c 10 http://google.com
+ ~~
    + CategoryInfo          : ObjectNotFound: (ab:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundException


Suggestion [3,General]: The command ab was not found, but does exist in the current location. Windows PowerShell does no
 instead type ".ab". See "get-help about_Command_Precedence" for more details.