Re: grep '[^a-z]oo' oo.txt

[Paolo Bonzini]

On 02/27/2011 02:17 PM, yuanbx wrote:
> My grep is grep 2.6.3, ubuntu 10.10
>
>
> oo.txt such as
>
>
> "Open Source" is a good mechanism to develop programs.
> apple is my favorite food.
> Football game is not use feet only.
> The soup taste good.
> I cant't finish the test.
> google is the best tools for serch keyword.
> goooooogle yes!
> the symbol '*' is represented as start.
> The world is the same with "glad".
> However, this dress is about $3183 dollars.
> You are the best is mean you are the no. 1.
> gog dod fof ioi ror.
>
> address@hidden:~$ grep '[^g-z]oo' oo.txt
> apple is my favorite food.
> Football game is not use feet only.
> address@hidden:~$  grep '[^f-z]oo' oo.txt
> address@hidden:~$

See "Environment Variables" in the grep manual:

`LC_ALL'
`LC_COLLATE'
`LANG'
     These variables specify the locale for the `LC_COLLATE' category,
     which determines the collating sequence used to interpret range
     expressions like `[a-z]'.

`LC_ALL'
`LC_CTYPE'
`LANG'
     These variables specify the locale for the `LC_CTYPE' category,
     which determines the type of characters, e.g., which characters
     are whitespace.

Your use case would be "fixed" (but it's not a bug, really) by "export 
LC_ALL=C".
Paolo