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

[yuanbx]

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:~$