How to pass command line arguments to awk program?


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# 1  
How to pass command line arguments to awk program?

Code:
#!/bin/awk -f
BEGIN {
        FS=":";
}
{
        if ( $7 == "" ) {
                print $1 ": no password!";
        }
}

I want to execute this program for a particular user to check for his password from the file /etc/passwd (as the input file) and the user details to be given at the command line


{(Rather this program should accept the user name at the command prompt)}
# 2  
Moderator's Comments:
Mod Comment This thread duplicates the thread: awk command line arguments not taking
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