Hello,
I want to create an alias for this command:

grep -i "<keyword_to_search>" <path_to_search>

alias k 'set ARGS1 =(\!1); set ARGS2 =(\!2); grep -i "$ARGS1" ARGS2'

k Help ./test/*

Had you told us what shell you are using, we had had the chance to help you.
E.g. for bash, the set command will set positional parameters, and ! will invoke history expansion (also indicated by the error msg).

For the purpose you have in mind, you don't need the parameters. If you need them, consider a shell function.

Thanks RudiC for the reply. I'm a newbie in linux so pardon me if I don't provide enough info. Not sure which shell I'm running but I've run the command:

echo $shell

Wouldn't the alias you are attempting to create achieve exactly the same result as grep itself?

Why not just alias k 'grep -i' ?

I think we can do it that way too, but for the sake of learning, just want to know how to use the

'set ARGS1 =(\!1); set ARGS2 =(\!2);

Rather than an alias, create a function for this (this is in korn shell)
k() { str="$1"; pth="$2; grep -i $str $pth ; }