linux中grep命令的詳細解釋(2)

linux中grep命令的詳細解釋

　　三、linux的grep命令的用法大全

　　查找特定字符串并顏色顯示

　　[root@ www.linuxidc.com]# grep -n 'the' regular_express.txt --color=auto

　　8:I can't finish the test.

　　12:the symbol '*' is represented as start.

　　15:You are the best is mean you are the no. 1.

　　16:The world <Happy> is the same with "glad".

　　18:google is the best tools for search keyword.

　　反向選擇查找特定字符串并顏色顯示

　　[root@ www.linuxidc.com]# grep -vn 'the' regular_express.txt --color=auto

　　1:"Open Source" is a good mechanism to develop programs.

　　2:apple is my favorite food.

　　......

　　忽略大小寫查找特定的字符

　　[root@ www.linuxidc.com]# grep -in 'the' regular_express.txt

　　使用 [] 來查找集合字符：

　　[root@ www.linuxidc.com]# grep -n 't[ae]st' regular_express.txt

　　8:I can't finish the test.

　　9:Oh! The soup taste good.

　　查找有‘oo’字符串

　　[root@ www.linuxidc.com]# grep -n 'oo' regular_express.txt

　　1:"Open Source" is a good mechanism to develop programs.

　　2:apple is my favorite food.

　　3:Football game is not use feet only.

　　9:Oh! The soup taste good.

　　18:google is the best tools for search keyword.

　　19:goooooogle yes!

　　查找有‘oo’字符串，但是不要前面有g的，即剔除goo

　　[root@ www.linuxidc.com]# grep -n '[^g]oo' regular_express.txt

　　2:apple is my favorite food.

　　3:Football game is not use feet only.

　　18:google is the best tools for search keyword.

　　19:goooooogle yes!

　　查找非小寫字母加oo的內容

　　[root@ www.linuxidc.com]# grep -n '[^a-z]oo' regular_express.txt

　　3:Football game is not use feet only.

　　獲取有數字的一行

　　[root@ www.linuxidc.com]# grep -n '[0-9]' regular_express.txt

　　5:However, this dress is about $ 3183 dollars.

　　15:You are the best is mean you are the no. 1.

　　[root@ www.linuxidc.com]# grep -n '[^[:lower:]]oo' regular_express.txt

　　3:Football game is not use feet only.

　　查詢以the開頭的字符

　　[root@ www.linuxidc.com]# grep -n '^the' regular_express.txt

　　12:the symbol '*' is represented as start.

　　查詢開頭是小寫字母的內容

　　[root@ www.linuxidc.com]# grep -n '^[a-z]' regular_express.txt

　　2:apple is my favorite food.

　　4:this dress doesn't fit me.

　　10:motorcycle is cheap than car.

　　12:the symbol '*' is represented as start.

　　18:google is the best tools for search keyword.

　　19:goooooogle yes!

　　20:go! go! Let's go.

　　查詢第一個字符不是大寫的

　　[root@ www.linuxidc.com]# grep -n '^[[:lower:]]' regular_express.txt

　　2:apple is my favorite food.

　　4:this dress doesn't fit me.

　　10:motorcycle is cheap than car.

　　12:the symbol '*' is represented as start.

　　18:google is the best tools for search keyword.

　　19:goooooogle yes!

　　20:go! go! Let's go.

　　查詢不是以英文開頭的字符

　　[root@ www.linuxidc.com]# grep -n '^[^a-zA-Z]' regular_express.txt

　　1:"Open Source" is a good mechanism to develop programs.

　　21:# I am VBird

　　查詢結尾是小數點的行的內容.

　　[root@ www.linuxidc.com]# grep -n '\.$' regular_express.txt

　　1:"Open Source" is a good mechanism to develop programs.

　　2:apple is my favorite food.

　　3:Football game is not use feet only.

　　4:this dress doesn't fit me.

　　10:motorcycle is cheap than car.

　　11:This window is clear.

　　12:the symbol '*' is represented as start.

　　15:You are the best is mean you are the no. 1.

　　16:The world <Happy> is the same with "glad".

　　17:I like dog.

　　18:google is the best tools for search keyword.

　　20:go! go! Let's go.

　　查找“空白行”

　　[root@ www.linuxidc.com]# grep -n '^$' regular_express.txt

　　22:

　　通配符.和*的使用，.(小數點)代表一定有一個任意字符，*代表重復前一個到無窮多次的意思

　　[root@ www.linuxidc.com]# grep -n 'g..d' regular_express.txt

　　1:"Open Source" is a good mechanism to develop programs.

　　9:Oh! The soup taste good.

　　16:The world <Happy> is the same with "glad".

　　查詢出現任意數字的行列

　　[root@ www.linuxidc.com]# grep -n '[0-9][0-9]*' regular_express.txt

　　5:However, this dress is about $ 3183 dollars.

　　15:You are the best is mean you are the no. 1.

　　查詢出現兩個o的字符串

　　[root@ www.linuxidc.com]# grep -n 'o\{2\}' regular_express.txt

　　1:"Open Source" is a good mechanism to develop programs.

　　2:apple is my favorite food.

　　3:Football game is not use feet only.

　　9:Oh! The soup taste good.

　　18:google is the best tools for search keyword.

　　19:goooooogle yes!

　　查詢出現2-5個o的字符串,后面在接一個g的字符串

　　[root@ www.linuxidc.com]# grep -n 'o\{2,5\}g' regular_express.txt

　　18:google is the best tools for search keyword.

　　19:goooooogle yes!

　　查詢出現2個以上o的字符串,后面在接一個g的字符串

　　[root@ www.linuxidc.com]# grep -n 'o\{2,\}g' regular_express.txt

　　18:google is the best tools for search keyword.

　　19:goooooogle yes!