"Open Source" is a good mechanism to develop programs.
apple is my favorit food.
Football game is not use feet only.
this dress doesn't fit me.
However,this dress is about $ 3183 dollars.
GNU is free air not free beer.
Her hair is very beautiful.
I can't finish the test.
Oh! The soup taste good.
motorcycle is cheap than car.
This window is clear.
the symbol '*' is represented as start .
oh ! my god !
The gd software is a library for drafting programs.
You are the best is mean you are the NO.1.
The world is the same with "glad".
I like dog.
google is the best tools for search keyword.
goooooogle yes!
go! go! Let's go .
# I am Maple
grep the regular_express.txt
grep -n 'the' regular_express.txt
grep -vn 'the' regular_express.txt
grep -n 't[ae]st' regular_express.txt
grep -n 'oo' regular_express.txt
grep -n '[^g]oo' regular_express.txt
grep -n '[^a-z]oo' regular_express.txt
grep -n '[0-9]' regular_express.txt
grep -n '^the' regular_express.txt
grep -n '^[^a-zA-Z]' regular_express.txt
grep '\.$' regular_express.txt
grep -v '^$' /etc/syslog.conf | grep -v '^#'
grep 'ooo*' regular_express.txt note: grep at least two 'o' in the file
grep 'g.*g' regular_express.txt
grep '[0-9][0-9]*' regular_express.txt
grep 'o\{2,5\}' regular_express.txt
