Hello everyone,
I am programming with grep command in my C/C++ application to steal its string manipulation functions. :-)
I have completed several simple cases. I am meeting issues with two cases, and I am wondering how to represent it in grep.
1. find the lines contain "foo" or "goo";
2. find the lines contain "foo" but no "goo".
could anyone help please?
thanks in advance,
George
> I am programming with grep command in my C/C++ application to steal its string manipulation functions. :-)
Ugh!
Try using the regexp library which presents the same functionality as grep but without all the expensive overhead of spawning a separate process every time you want to do something.
> 1. find the lines contain "foo" or "goo";
egrep '[fg]oo'
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
Thank you Salem!
Your method does not work in this case. How to find the string contains either "abc" or "def"? Any general ways to implement or logics?Originally Posted by Salem
regards,
George
Code:egrep 'read|the|manual' file.txt
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
Cool Salem, thank you!
regards,
George
