shell script experts pls help a lost soul

["john smith" <inquirer23@hotmail.com>]

hi,

I am having some problems creating some sample scripts...hoping that 
somebody can lend a helping hand.

#!/bin/sh
if test -x $1
then whoami;
echo $1
fi

Yes I know my script sucks but I'm just learning..anyway, my questions are:

1. my script doesn't seem to display the script name together with 
whoami..actually,  what the script was supposed to do is when it is invoked, 
it will display the user name together with the scriptname should the 
scriptname gets changed somehow..it displays the username but not the 
scriptname itself.

2. how do I add to this script the count of the number of lines in a file? 
i.e. let's say cat's man page.

3.lastly,let's say I want to print the first line of each 3-char.h file in 
/usr/include/lib..how can I accomplish this?

and Yes, this is part of my assignment but any ideas/help would be very 
valuable since I don't know anymore what to do...

please help me, you were all beginners once...

TIA, :)
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