match pattern in a big file

Have a big text file (>2G). Want to get the lines, in which there is a pattern match, saying pattern  'ABC  XYZ'. The line length can be up to 4000 characters. Questions:
what computer language is suitable for this situation? Could any gurus please share a piece of code or a link about it?
jl66Asked:
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ozoCommented:
sed -n "/ABC  XYZ/p"
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jmcgOwnerCommented:
There's a difference between a pattern match and string search for a fixed string.

The latter is better handled using a Boyer-Moore approach. Many programming languages have regular expression support to search for patterns as well as primitives to match fixed strings.

Perl is indifferent to file size or line length, so as an example you could do

perl -ne 'print if index($_, "ABC XYZ") >= 1' BigTextFile.txt

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and it will print out just those lines that contain the string of interest.
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jmcgOwnerCommented:
I didn't reach for sed because I remembered that it "silently" truncated lines that were longer than a certain size. That's apparently no longer true for modern implementations of sed, but is a caution if you're dealing with a really old system.
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ozoCommented:
I had forgotten that sed could have that problem. Thank you for the precaution.
I might have used grep for this task, but it would be hard to call that a programming language.  
(Though I guess it could qualify as a "computer language")
In perl, I might prefer
perl -ne 'print if index($_, "ABC XYZ") >= 0' BigTextFile.txt
or
perl -ne 'print if /ABC XYZ/' BigTextFile.txt
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jmcgOwnerCommented:
Yes, greater than or equal to zero. What was I thinking?

(The original grep had a similar line length restriction.)
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jl66Author Commented:
Thanks a lot for the info.

I ran it in windows 7 and got the error. The text I tried to catch in the big file is "text" such as
...,"text":"RT @...
...,"text":"Test...

F:\>perl -ne 'print if /text/' bigtext.txt
Can't find string terminator "'" anywhere before EOF at -e line 1.

F:\>perl -ne 'print if index($_, "text") >= 0' twitter_short.txt
Can't find string terminator "'" anywhere before EOF at -e line 1.

The perl version is
F:\>perl -version
This is perl 5, version 14, subversion 4 (v5.14.4) built for MSWin32-x64-multi-thread
Copyright 1987-2013, Larry Wall

I don't know why?
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ozoCommented:
MSWin uses different quotes
perl -ne "print if index($_, 'text') >= 0" twitter_short.txt
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jl66Author Commented:
Thanks a lot. Big help.
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