Hi there,
Say I have a text file of huge size, say 1G (?), and I want to print a random line from that file. The way I was thinking of is:

1. run a while loop where I can get the total line number of that file.
2. call the random function by giving the range of that total line number.
3. run the while loop for the second time to print out that random line.
But it is really costly! Is there a much better, more efficient way to do that.

Thanks,
Charlie,

There are several ways to do this:
1. Store data in DB.
2. Read once and index it: store somewhere start of each line.

Try to call unix command thro perl using system command .

You can count the line if you want. If you want print any line use sed -n command , this is simple.