Spake Paul M Foster on Friday, May 26, 2006 at 02:17AM -0400:
> Eben King wrote:
> >On Fri, 26 May 2006, Paul M Foster wrote:
> >
> >>Here's what I need to do (sometimes): Take a text file and split it
> >>into pieces. The split command won't work for this, because the pieces
> >>may not be equal. For example, I may want to split an 8000 line file
> >>into pieces 2000, 3000 and 3000 lines each. I'm willing to run the
> >>same command multiple times with different parameters, but whatever I
> >>use needs to be some common command expected to be there on any
> >>system. I've looked at split, head and tail. I suspect I can do this
> >>with sed or awk, but I'm not very familiar with those two, beyond
> >>rudimentary use. Can anyone suggest a solution?
> >
> >Find out what line is the first that should be in the second file (call
> >it L).
> >
> >head -n L-1 filename > file1
> >tail +L filename > file2andLater
> >
>
> (Note: I'm not using a second file to tell me where the splits should be.)
>
> A (real) example of the above would be (assuming original file contains
> 10000 lines, and needs splits of 2000, 3000, 3000 and 2000):
with the ginsu.pl in another reply of mine, you'd:
perl ginsu.pl bigfile 2000 3000 3000 2000
--
...the number of UNIX installations has grown to 10, with more expected...
-- Dennis Ritchie and Ken Thompson, June 1972
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