Re: Searching a pattern's first and last occurrence in a file.

a single huge line of 1000s of words

Slurp the file and use index, rindex and substr:

my $content = do{ local @ARGV = 'theFile.htm'; <> };
my $first = index $content, 'Oct-18-2013';
my $last = rindex $content, 'Oct-18-2013';

print substr $content, $first, $last;;
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With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

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.

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Re^2: Searching a pattern's first and last occurrence in a file. by ankurk (Initiate) on Oct 19, 2013 at 17:05 UTC
Thanks a lot i am almost done now. Just wanted to ask is there any way to search a file for a string bottom up? I know there is a module file::readbackwards,But i am not able to install it. any other way? Secondly how do i search ABCXXX where xxx could be Jan Feb...... Dec Thanks Ankur	[reply]
Re^3: Searching a pattern's first and last occurrence in a file. by BrowserUk (Patriarch) on Oct 19, 2013 at 17:14 UTC
is there any way to search a file for a string bottom up? There are ways, but unless your file(s) are so big that you cannot fit them in memory(?), I wouldn't bother because they are horribly inefficient. Secondly how do i search ABCXXX where xxx could be Jan Feb...... Dec Use regex. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' 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.	[reply]
Re^4: Searching a pattern's first and last occurrence in a file. by ankurk (Initiate) on Oct 19, 2013 at 17:51 UTC
Actually i need to search html tag like `<XXX>Jan or <XXX>Feb ... and so on.` Not getting the desired results.	[reply] [d/l]
Re^5: Searching a pattern's first and last occurrence in a file. by BrowserUk (Patriarch) on Oct 19, 2013 at 19:24 UTC
Re^4: Searching a pattern's first and last occurrence in a file. by ankurk (Initiate) on Oct 20, 2013 at 13:24 UTC
Thanks for your help... Took me some time to troubleshoot. But finally getting the required results. Cheers Ankur	[reply]