例说sed续一

嗯嗯，现在让我们用例子说话。

真是不做不知道呀……麻烦一大堆！！！

下面是要用到的datafile的内容：

northwest NW Charles Main 3.0 .98 3 34

western WE Sharon Gray 5.3 .97 5 23

southwest SW Lewis Dalsass 2.7 .8 2 18

southern SO Suan Chin 5.1 .95 4 15

southeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

northeast NE AM Main Jr. 5.1 .94 3 13

north NO Margot Weber 4.5 .89 5 9

central CT Ann Stephens 5.7 .94 5 13

＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃＃

READY GO！！！！

e.g. 1:

a\－－找到以north开头的行并在其后添加很多FUCK

[fedora@novice chap04]$ sed '/^north/a\FUCK FUCK FUCK FUCK \nkcuf kcuf kcuf kcuf' datafile

northwest NW Charles Main 3.0 .98 3 34

FUCK FUCK FUCK FUCK

kcuf kcuf kcuf kcuf

western WE Sharon Gray 5.3 .97 5 23

southwest SW Lewis Dalsass 2.7 .8 2 18

southern SO Suan Chin 5.1 .95 4 15

southeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

northeast NE AM Main Jr. 5.1 .94 3 13

FUCK FUCK FUCK FUCK

kcuf kcuf kcuf kcuf

north NO Margot Weber 4.5 .89 5 9

FUCK FUCK FUCK FUCK

kcuf kcuf kcuf kcuf

central CT Ann Stephens 5.7 .94 5 13

***************************************************

*发现在bash中只能像上面那样输入且a后的\可有可无 ；

*并不像书上说的那样，不知是不是跟SHELL有关系

*一般，a后是要带\的，有时还要带两个。如果要添加的

*文本不止一行的话，除了最后一行每一行的结尾都要跟\。

***************************************************

e.g. 2:

i\ －－在以central开头的行前分行插入FUCK

[fedora@novice chap04]$ sed '/central/i\F\nU\nC\nK' datafile

northwest NW Charles Main 3.0 .98 3 34

western WE Sharon Gray 5.3 .97 5 23

southwest SW Lewis Dalsass 2.7 .8 2 18

southern SO Suan Chin 5.1 .95 4 15

southeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

northeast NE AM Main Jr. 5.1 .94 3 13

north NO Margot Weber 4.5 .89 5 9

F

U

C

K

central CT Ann Stephens 5.7 .94 5 13

***************************************************

*一般，如果要添加的文本不止一行的话，除了最后一行

＊每一行的结尾都要跟\。但在我这里好像有点不一样

***************************************************

e.g. 3:

c\－－把有sourth的行全部用FUCK取代

[fedora@novice chap04]$ sed '/south/c\FUCK' datafile

northwest NW Charles Main 3.0 .98 3 34

western WE Sharon Gray 5.3 .97 5 23

FUCK

FUCK

FUCK

eastern EA TB Savage 4.4 .84 5 20

northeast NE AM Main Jr. 5.1 .94 3 13

north NO Margot Weber 4.5 .89 5 9

central CT Ann Stephens 5.7 .94 5 13

***********************************************

*其它与e.g.1 ,e.g. 2 类似

***********************************************

e.g. 4:

d－－删除第一行

[fedora@novice chap04]$ sed '1d' datafile

western WE Sharon Gray 5.3 .97 5 23

southwest SW Lewis Dalsass 2.7 .8 2 18

southern SO Suan Chin 5.1 .95 4 15

southeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

northeast NE AM Main Jr. 5.1 .94 3 13

north NO Margot Weber 4.5 .89 5 9

central CT Ann Stephens 5.7 .94 5 13

d－－删除1－4行

[fedora@novice chap04]$ sed '1,4d' datafile

southeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

northeast NE AM Main Jr. 5.1 .94 3 13

north NO Margot Weber 4.5 .89 5 9

central CT Ann Stephens 5.7 .94 5 13

d－－删除有north的行

[fedora@novice chap04]$ sed '/north/d' datafile

western WE Sharon Gray 5.3 .97 5 23

southwest SW Lewis Dalsass 2.7 .8 2 18

southern SO Suan Chin 5.1 .95 4 15

southeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

central CT Ann Stephens 5.7 .94 5 13

e.g. 5:

s－－替换。用FUCK替换north.

[fedora@novice chap04]$ sed 's/north/FUCK/' datafile

FUCKwest NW Charles Main 3.0 .98 3 34

western WE Sharon Gray 5.3 .97 5 23

southwest SW Lewis Dalsass 2.7 .8 2 18

southern SO Suan Chin 5.1 .95 4 15

southeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

FUCKeast NE AM Main Jr. 5.1 .94 3 13

FUCK NO Margot Weber 4.5 .89 5 9

central CT Ann Stephens 5.7 .94 5 13

s－－替换。用FUCK替换所有以south开头的行中的south.

[fedora@novice chap04]$ sed '/^south/s/south/FUCK/g' datafile

northwest NW Charles Main 3.0 .98 3 34

western WE Sharon Gray 5.3 .97 5 23

FUCKwest SW Lewis Dalsass 2.7 .8 2 18

FUCKern SO Suan Chin 5.1 .95 4 15

FUCKeast SE Patricia Hemenway 4.0 .7 4 17

eastern EA TB Savage 4.4 .84 5 20

northeast NE AM Main Jr. 5.1 .94 3 13

north NO Margot Weber 4.5 .89 5 9

central CT Ann Stephens 5.7 .94 5 13

s－－替换。 寻找大于1少于10的一位小数并用FUCK＋＆替代。这里的＆保存了前面的小数

[fedora@novice chap04]$ sed 's/[0-9]\.[0-9]/FUCK&/' datafile

northwest NW Charles Main FUCK3.0 .98 3 34

western WE Sharon Gray FUCK5.3 .97 5 23

southwest SW Lewis Dalsass FUCK2.7 .8 2 18

southern SO Suan Chin FUCK5.1 .95 4 15

southeast SE Patricia Hemenway FUCK4.0 .7 4 17

eastern EA TB Savage FUCK4.4 .84 5 20

northeast NE AM Main Jr. FUCK5.1 .94 3 13

north NO Margot Weber FUCK4.5 .89 5 9

central CT Ann Stephens FUCK5.7 .94 5 13

*******************************************************

*刚开始时用的是下面的语句：

＊sed 's/[0-9][0-9]$/FUCK&/g' datafile，怎么弄都不成功。

* 不知是怎么回事。

*******************************************************

今天就到这吧，都要吐了。。。。。。