Say you've got a simple ascii text file, say, 250,000 lines long. Let's say it's a logfile. Suppose that you wanted to access an arbitrary range of lines, say, lines 10,000 - 13,000. One way of doing this is:
<snip> sed -n 10000,13000p foobar.txt </snip> Trouble is, the target systems I need to exec this on are ancient and don't take very kindly to the io hammering this delivers. Can you suggest a better way of achieving this? As these *are* logs I'm dealing with I have already implemented rotation frequency. That helps, but I'm still facing performance issues. I'm specifically looking for input as to whether my sed-based approach can be improved. Because of extremely limited network bandwidth pulling the files off the wire and processing them on more studly hardware isn't an option. Also, I cannot install any binaries on these remote systems. Standard POSIX toolkit is all I've got to work with. :-/ Many thanks, y'all! --Trey ++----------------------------------------------------------------------------++ Trey Darley - Brussels mobile: +32/494.766.080 ++----------------------------------------------------------------------------++ Quis custodiet ipsos custodes? ++----------------------------------------------------------------------------++ _______________________________________________ Discuss mailing list Discuss@lopsa.org http://lopsa.org/cgi-bin/mailman/listinfo/discuss This list provided by the League of Professional System Administrators http://lopsa.org/
