title: How to get some specific lines from huge text file in unix?
body: <p>I use importing systems based on delimited text files. The files used can sometimes be almost 2 Gb big and I have to check some lines from that file.
     So I want to know how can I output (on another file, or just on screen) the lines of specific value? E.g. line number 1010123, 1002451, 994123, etc., exactly as they are in the source file?</p>