The details are as follows (I use PHP):

& lt？ Server-side programming language (abbreviation of professional hypertext preprocessor)

If (! Empty ($ TERM str))

{

Echo "& lthr & gtn";

$ cmdstr = " grep-I $ search str * "；

$fp = popen($cmdstr，" r ")；

$ my result = array()；

while ($buffer = fgets ($fp，4096))

{

list($fname，$fline) = split(":"，$buffer，2)；

If (! Defined ($myresult[$fname]))

$ my result[$ fname]= $ fline；

}

if (count($myresult))

{

Echo "& LTOL & GTN";

while (list($fname，$fline) = each($myresult))

Echo "< Li>& ltHREF =" $ fname ">；; $ fname & lt/A & gt； : $ fline & lt/ Lee>N ";

Echo "& lt/OL & gt；; n”；

}

other

{

Echo "Sorry, there are no query results.

}

pclose($ FP)；

}

& gt

The above is a simple search engine I have written.

Simple as it is, it is very practical.