comment on

If you need to read line 100 once, read from the beginning.
If you know you'll need to read line 100 again, remember where (tell) in the file it was located.
And while you're at it, you may as well remember where lines 1 through 99 where located also.
If you need to read lines at random and often, and quickly: see Re: help reading from large file needed.
It will take a local file, of ( 8*number-of-lines ) bytes, to hold the index, and roughly the same amount of time as wc -l.
With a slightly more sophisticated indexer, the size of the index file can be reduced by half.

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

In reply to Re: Read Some lines in Tera byte file by BrowserUk
in thread Read Some lines in Tera byte file by Anonymous Monk

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