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grep `abc\{3,5\}d`file - does what? URGENT!

  • marjeg
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Post January 14th, 2007, 10:38 am

Hi!

Can anyone help me with what the command
grep `abc\{3,5\}d`file
does? URGENT!

:shock:

Maria from Sweden
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Post January 14th, 2007, 10:38 am

  • theak
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Post January 14th, 2007, 10:47 am

Grep searches files for a specific string, 'abc\{3,5\}d' in your case, with the file searched called 'file' in your example.
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Post January 14th, 2007, 11:00 am

theak wrote:
Grep searches files for a specific string, 'abc\{3,5\}d' in your case, with the file searched called 'file' in your example.


Thanks for you answer! :)

Do you also know what more specific what does " 'abc\{3,5\}d'" means?

Even for someone like me unix can be quit confusing!
:lol:
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Post January 14th, 2007, 12:02 pm

It's the text grep is looking for, I have no idea what it could mean...
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Post January 14th, 2007, 3:11 pm

`abc\{3,5\}d`outputs abc{3,5}d to the console. it needs \{ so that it doesn't try to process the { instead.
where exactly did you get this concotion from? lol
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Post January 14th, 2007, 3:43 pm

According to the man page the string abc would be matched at least 3 times but no more than 5. The \ is supported in egrep, not grep.
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Post January 15th, 2007, 12:57 am

AnarchY SI wrote:
`abc\{3,5\}d`outputs abc{3,5}d to the console. it needs \{ so that it doesn't try to process the { instead.
where exactly did you get this concotion from? lol


Hi there! Thanks a lot for yur answer! :D
I got it from some questions from a friend of mine...
Thanks again! /Maria
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Post January 15th, 2007, 1:00 am

Don2007 wrote:
According to the man page the string abc would be matched at least 3 times but no more than 5. The \ is supported in egrep, not grep.


Thanks for your answer! :D
Now I can finally relax!
Thank you so much! :D
Maria
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Post January 15th, 2007, 5:35 pm

Don't tell me that you couldn't relax until you had the answer to that question. You get old fast that way.
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Post January 30th, 2007, 2:24 pm

Also try typing "man grep" (no quotes) in the terminal for more information on what it does.

Here's a good tutorial on grep and regular expressions:
http://pegasus.rutgers.edu/~elflord/unix/grep.html

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