In <[EMAIL PROTECTED]> [EMAIL PROTECTED] (Bob Proulx) writes: >kj wrote: >> I need to extract and reorder some columns from some very large >> files. GNU cut will extract the columns nicely and quickly, but >> won't reorder them. I can do the reordering easily by piping the >> output of cut through a perl one-liner, but I'm looking for something >> faster. >> >> Is there a GNU utility that will do this?
>Not just GNU but POSIX standard. Use awk. This is quite a revelation. I never knew that awk was so much faster than perl. I'm getting speed-ups of 6 or 7-fold... Thanks! kynn -- NOTE: In my address everything before the first period is backwards; and the last period, and everything after it, should be discarded.
